Allegheny County, Pennsylvania
109-115 Wood Street
Allegheny Cemetery
Allegheny Commons
Allegheny County Courthouse and Jail
Allegheny High School
Allegheny Observatory
Allegheny Post Office
Allegheny River Lock and Dam No. 2
Allegheny River Lock and Dam No. 3
Allegheny River Lock and Dam No. 4
Allegheny West Historic District
Allerdice, Taylor, High School
Alpha Terrace Historic District
Armstrong Cork Company
Armstrong Tunnel
Arsenal Junior High School
Baxter High School
Bayard School
Bedford School
Beechwood Elementary School
Bell Telephone Company of Pennsylvania Western Headquarters Building
Beltzhoover Elementary School
Beulah Presbyterian Church
Bindley Hardware Company Building
Birmingham Public School
Boggs Avenue Elementary School
Bost Building
Bowman Homestead
Boyce Station
Boys' Club of Pittsburgh
Brashear, John A., House and Factory
Bridge in Jefferson Borough
Bridge in Shaler Township
Buhl Building
Burke Building
Burtner Stone House
Butler Street Gatehouse
Byers-Lyons House
Byrnes & Kiefer Building
Calvary Episcopal Church
Campbell Building
Carnegie Free Library
Carnegie Free Library of Allegheny
Carnegie Free Library Of Braddock
Carnegie Institute and Library
Carnegie, Andrew, Free Library
Carrie Blast Furnace Number 6 and 7
Carson, Rachel, House
Cathedral of Learning
Century Building
Chatham Village Historic District
Colfax Elementary School
Connelly, Clifford B., Trade School
Conroy Junior High School
Consolidated Ice Company Factory No. 2
Coraopolis Armory
Coraopolis Bridge
Coraopolis Railroad Station
Crawford Grill No. 2
Davis Island Lock and Dam Site
Deutschtown Historic District
Dilworth Elementary School
Dollar Savings Bank
Duquesne Incline
East Carson Street Historic District
East Liberty Commercial Historic District
East Liberty Market
Eberhardt and Ober Brewery
Elmridge
Emmanuel Episcopal Church
Evergreen Hamlet
Ewart Building
Experimental and Safety Research Coal Mines
Experimental Mine, U.S. Bureau Of Mines
Fifth Avenue High School
First Methodist Episcopal Church of McKeesport
First United Presbyterian Church of Braddock
Firstside Historic District
Firstside Historic District (Boundary Increase)
Ford Motor Company Assembly Plant
Forks of the Ohio
Fort Pitt Elementary School
Fortieth Street Bridge
Foster School
Fourth Avenue Historic District
Fourth Avenue Historic District (Boundary Increase)
Frew, John, House
Frick Building and Annex
Frick Park
Frick, Henry Clay, Training School for Teachers
Fulton Building
Fulton Elementary School
Fulton Log House
Gardner-Bailey House
Gilfillan Farm
Greenfield Elementary School
Hamnett Historic District
Hartley-Rose Belting Company Building
Hazelwood Brewing Company
Heathside Cottage
Heinz, H.J., Company
Henderson-Metz House
Highland Building
Highland Park
Highland Park Residential Historic District
Highland Towers Apartments
Hoene-Werle House
Homestead High-Level Bridge
Homestead Historic District
Homestead Pennsylvania Railroad Station
House at 200 West North Avenue
Houses at 2501-2531 Charles Street
Houses at 838-862 Brightridge Street
Hunt Armory
Hunter Saw & Machine Company
Hutchinson Farm
International Harvester Company of America: Pittsburgh Branch House
Jerome Street Bridge
Kaufmann's Department Store Warehouse
Kennywood Park
Kerr, Thomas R., Dr., House and Office
Knoxville Junior High School
Langley High School
Larimer School
Latimer School
Lawrence Public School
Lawrenceville Historic District
Lemington Elementary School
Letsche Elementary School
Liberty Bridge
Liberty School No. 4, Friendship Building
Lightner, Isaac, House
Lincoln Elementary School
Linden Avenue School
Lobb's Cemetery and Yohogania County Courthouse Site
Logans Ferry Powder Works Historic District
Longfellow School
Longue Vue Club and Golf Course
Madison Elementary School
Main Building, U.S. Bureau of Mines
Manchester Historic District
McCleary Elementary School
McCook Family Estate
McKees Rocks Bridge
McKeesport National Bank
Mexican War Streets Historic District (Boundary Increase II)
Mexican War Streets Historic District (Boundary Increase)
Mexican War Streets Historic District,
Mifflin Elementary School
Miller, Andrew S. and Elizabeth, House
Miller, James, House
Mine Roof Simulator
Monongahela Incline
Mooncrest Historic District
Moreland-Hoffstot House
Morrow, John, Elementary School
Morse, Samuel F. B., School
Mt. Lebanon Historic District
Neville House
New Granada Theater
Ninth Street Bridge
Oakdale Public School
Oakland Public School
Oakmont Country Club Historic District
Ohringer Building
Old Allegheny Rows Historic District
Old Heidelberg Apartments
Oliver, David P., High School
Osterling, Frederick J., Office and Studio
Park Place School
Penn-Liberty Historic District
Penn-Liberty Historic District (Boundary Increase)
Pennsalt Historic District
Pennsylvania Railroad Bridge
Pennsylvania Railroad Station
Pennsylvania Railroad Station-Wilkinsburg
Perry High School
Phipps Conservatory
Phipps-McElveen Building
Pittsburgh & Lake Erie Railroad Station
Pittsburgh and Lake Erie Railroad Complex
Pittsburgh Athletic Association Building
Pittsburgh Brass Manufacturing Company Building
Pittsburgh Central Downtown Historic District
Pittsburgh Central Downtown Historic District (Boundary Increase)
Pittsburgh Mercantile Company Building
Pittsburgh Renaissance Historic District
Pittsburgh Terminal Warehouse and Transfer Company
Prospect Junior High and Elementary School
Reed Hall
Reymer Brothers Candy Factory
Riverview Park
Rodef Shalom Temple
Rotunda of the Pennsylvania Railroad Station
Salvation Army Building, The
Sauer Buildings Historic District
Schenley Farms Historic District
Schenley Farms Historic District (Boundary Increase)
Schenley High School
Schenley Park
Schiller Elementary School
Scott, James, House
Sellers House
Seventh Street Bridge
Shadyside Presbyterian Church
Shields, David, House
Singer, John F., House
Sixteenth Street Bridge
Sixth Street Bridge
Smithfield Street Bridge
Snyder, William Penn, House
Soldiers and Sailors Memorial Hall
South Side High School
South Side Market Building
South Tenth Street Bridge
Sperling Building
Springfield Public School
St. Boniface Roman Catholic Church
St. John the Baptist Ukranian Catholic Church
St. Nicholas Croatian Church
St. Stanislaus Kostka Roman Catholic Church
St. Thomas Memorial Church
Stanley Theater and Clark Building
Sterrett Sub-District School
Strip Historic District
Teutonia Maennerchor Hall
Thornburg Historic District
Try Street Terminal
Tuberculosis Hospital of Pittsburgh
Turtle Creek High School
Union Trust Building
United States Post Office-Sewickley Branch
Ursuline Young Ladies Academy
US Post Office and Courthouse-Pittsburgh
Van Kirk Farm
Walker-Ewing Log House
Washington Vocational School
Way, Nicholas, House
West End-North Side Bridge
Westinghouse Air Brake Company General Office Building
Westinghouse High School
Westinghouse, George, Memorial Bridge
Whitehill-Gleason Motors
Wightman School
Wilkinsburg Historic District
William Penn Hotel
Wilpen Hall
Wilson, August, House
Woods, John, House
Woolslair Elementary School
1892 Homestead Strike Memorial
1909 McKee's Rocks Strike
1st Drive-In Filling Station
841 Lincoln Avenue
A Gift from Henry Clay Frick
All Saints Church
Allegheny Arsenal
Allegheny Cemetery
Allegheny Cotton Mill Strikes
Allegheny Country Club
Allegheny County
Allegheny County
Allegheny County Courthouse and Jail
Allegheny County Soldier's Monument
Allegheny High School
Allegheny Observatory
Allegheny Post Office
Allegheny Soldiers' Lot
Andrew Carnegie
Andrew Stephen McSwigan
Anthony Sadowski
Aria Cultural District Lofts
Arrott Building
Art Blakey
Arthur J. Rooney
Atwell-Christy House
August Wilson
Auto Race
Avery College
Barney Dreyfuss
Benedum-Trees Building
Bessemer Converter
Bethel A.M.E. Church
Bethel Presbyterian Church
Beulah Chapel
Billy Eckstine
Birthplace of Gertrude Stein
Birthplace of the Aluminum Industry
Borough of Bradford Woods
Borough of Dormont Pool
Bost Building
Bouquet Camp
Bower Hill
Braddock Carnegie Library
Braddock's Crossing
Braddock's Defeat
Braddock's Field
BraddockÂ’s Crossing
Brown Chapel AME Church
Buhl Planetarium and Institute of Popular Science
Burke's Landmark
Burtner House
Butler Short Line
Butler Short Line
Byers-Lyon House
Calvary Episcopal Church
Calvary United Methodist Church
Capt. Frederick Way, Jr.
Carnegie Hero Fund Commission
Carnegie Library of Homestead
Carnegie Library of Homestead Swim Team
Catahecassa, Blackhoof
Charles Martin Hall
Charles Taze Russell
Chartier's Old Town
Chiodo's Tavern
Clayton
Clinton Furnace
Colonel George Washington Monument
Colonial Place Historic District
Congregation B'nai Israel
Corliss Street Tunnel
Count Noble / Mildmay Park Beauty
County of Allegheny Law Enforcement Officers Memorial
County Office Building
Crawford Grill
D.T. Watson Home for Crippled Children
Daisy E. Lampkin
David L. Lawrence
David McKee
Davis Island Lock and Dam
Depreciation Lands Survey
Depreciation Lands Survey
Dorothy Mae Richardson
Dravo Corporation Shipyard
Duquesne Incline
Duquesne Steel Works
Duquesne University
E & O Brewery
E.V. Babcock-The Father of Allegheny County Parks / Creation - Ecology - Culture
Early Land Use
East Liberty Presbyterian Church
Edgar Thomson Plant
Edith Darlington Ammon
Elias Fry Barn
Elizabeth
Epiphany Roman Catholic Church
Ethelbert Nevin
Family Court Facility
Ferry Landing
First Aluminum Observatory Dome
First Free Public Library Building in the United States
First Mining of Pittsburgh Coal
First Muslim Mosque of Pittsburgh
First Professional Football Game
First United Methodist Church
First World Series
Flatiron Building
Forbes Field
Forbes Road
Forbes Road
Forbes Road, 1758
Forks of the Ohio Fort Pitt Blockhouse
Fort Duquesne
Fort Lafayette
Fort Reburn
Fort Vance
Founding Convention of the AFL
Founding Convention of the CIO
Founding of the Ironworkers Union
Fourth Ward Memorial
Frances Perkins
Frank Conrad
Frank E. Bolden
Frank Vittor
Frederick Ingersoll
Frederick J Osterling Office & Studio
Freedom House Ambulance
Frick Family
Frick Park Today
Frick Woods Nature Preserve
From Slavery to Freedom Garden
General Matthew B. Ridgway
George Adam Weddell
George Was Here
George Westinghouse
George Westinghouse Memorial
Glenfield War Memorial
Gold Star Mothers Memorial
Grace United Methodist Church
Grant's Hill
Great Strike Ignites the Nation!
Greenfield Veterans Memorial
Greenhouse
Greenlee Field
Greenstone United Methodist Church
Gulf Building
Guyasuta
Hampton Battery Monument
Hand's Hospital
Harwick Miners Memorial
Hazelwood: A Rivertown Rich in History
Heidelberg Raceway and Sports Arena
Heinz Hall
Helen Richey
Henry Clay Frick
Henry J. Heinz
Herb Scott
Herr's Island
Hiland Presbyterian Church
Historic Site in Journalism
History / Restoration
History of Observatory Hill
Homestead Strike
Homestead Strike Victims
Honus Wagner
Hyeholde
In Honor of Service
In Memory of All Korean War Veterans
In Memory of Eric S. Holman, Staff Sergeant, U.S. Army
In Memory of John (Jack) Brennan
Influential Figures
J.P. "Honus" Wagner
James Hay Reed
Jane Grey Swisshelm
Jane Grey Swisshelm Childhood Home
Jane Holmes
Joe Magarac • 1940
John A. Roebling
John M. Phillips
John Scull
John T. Comès
Johnny Unitas
Johnson Studio
Jonas Salk
Jones and Laughlin
Jones Hall
Joshua (Josh) Gibson
Joshua Meeks
Kaufmann's Department Store and Clock
Kennedy-Nixon Taft-Hartley Debate
Kenny Memorial Field Flagpole
Kennywood Park
Kennywood's Thunderbolt
Kier Refinery
Kitchen Garden
Korean War Veterans' Monument
Kuskusky Path
Laffin' Sal
Lance Corporal Patrick B. Kenny
Langley Observatory Clock
Le Magnifique
Leetsdale Veterans Memorial
Lewis and Clark Expedition
Linhart Homestead
Linwood Apartments
Lois Weber
Louis Mason, Jr
Mala Jaska
Maria Sklodowska Curie
Martha Graham
Martin R. Delany
Mary Cassatt
Mary Harris "Mother" Jones
Mary Lou Williams
Materials Handling
McClurg Iron Foundry
McKees Rocks Mound
Mellon Park
Mellon Square
Merchants Savings & Trust Company
Mercy Hospital
Michael A. Musmanno
Miniature Railroad
Monongahela River Navigation System
Monongahela Wharf Commercial Buildings
Monongahela's First Lock & Dam
Moon Township September 11th Memorial
Mooncrest
Motor Square Garden
Mount Assisi
Mt. Lebanon Municipal Building
Mt. Nebo U.P. Church War Memorial
National Carpatho-Rusyn Cultural and Educational Center
National Negro Opera Company
National P.O.W.-M.I.A. Recognition Day
National Tube Works
Neville House
Nevin Row
Ninth Street Bridge
Noah's Ark
Oakmont Carnegie Library
Old Allegheny Market House
Old Saint Luke's Church
Old Sewickley Post Office
On This Site
Open Hearth Steel
Original Settler's Cabin
Original Site of the Baseball Diamond
Orr's Block House
Our Lady of Lourdes Grotto
Park Development
Pat the Avenger Returns Fire
Pennsylvania Canal
Perry's Hall
Pioneer Short-Wave Station
Pittsburgh
Pittsburgh
Pittsburgh Brewing Company
Pittsburgh Glass Works
Pittsburgh Grease Plant
Pittsburgh Plate Glass Company
Pittsburgh's Grand Hall at the Priory
Playhouse
Pledge of Allegiance
Polish Army
Portal of Industry
Prehistoric Rivers
Presston
Queen Aliquippa
Rachel Carson
Radio Station KDKA
Railroad Strike of 1877
Refining Crude Oil
Riverview United Presbyterian Church
Robert Lee Vann
Roberto Clemente Bridge
Roslyn Place Wood Block Paving
Sacred Heart Church
Safe Haven Denied at Allegheny Arsenal
Saint Bernard Church
Saint Nicholas Roman Catholic Church
Saint Peter Roman Catholic Church
Saint Stanislaus Kostka Roman Catholic Church
Salk Polio Vaccine
Schenley Park
Schenley Park Bridge
Schenley Park Bridge
Seige at the 26th Street Roundhouse
Seldom Seen Arch
Seventh Street Bridge
Sewickley Public Library
Shadyside Iron Furnace
Shannopin Town
Shields Presbyterian Church
Shousetown Boatyard
Shousetown Cemetery Memorial
Simon Girty
Sisters of Mercy
Site of Bear Tavern
Site of the Western Penitentiary
Sixteenth Street Bridge
Smithfield Street Bridge
Southminster Presbyterian Church
Southwestern Pennsylvania World War II Memorial
St Colman School
St. Boniface Roman Catholic Church
St. John the Baptist Roman Catholic Church
St. John the Baptist Ukrainian Catholic Church
St. Joseph's Roman Catholic Church
St. Mary's Ukrainian Orthodox Church
St. Matthews African Methodist Episcopal Zion Church
St. Nicholas Church
St. Nicholas Church and Mala Jaska
St. Nicholas Croatian Church
St. Nicholas Roman Catholic Croatian Church, North Side
St. Peter's Evangelical and Reformed Church
Standard Chemical Company
State Violence Incites Rioting
Station WQED
Steamboat "New Orleans"
Steel on the Move
Steelmaking Capital of the World
Stephen C. Foster
Stephen Collins Foster
Stone Mansion
Suburban Catalyst
The Benedum Center
The Biergarten
The City of Pittsburgh was named by General John Forbes in Honor of William Pitt
The Desperate and the Decadent
The Dickson Log House
The Duquesne Club
The Empty Pocket Pays
The First Holy Mass at Fort Duquesne
The First Visit of Abraham Lincoln
The Forks of the Ohio
The Frick Art Museum
The Granite Building
The Great Steel Strike of 1919
The Highwood
The Hiker
The Homestead Grays
The Homewood Cemetery
The Immaculate Reception
The Kenny Fountain
The King's Garden
The Lagering Caves
The Mansion House
The McKee Mansion
The Menace of the Iron Horse
The MonCon Railroad
The Pagoda
The Pittsburgh Agreement
The Pittsburgh Platform
The Pittsburgh Point
The Pittsburgh, Fort Wayne and Chicago Station
The Presbyterian Church
The Site of Fort Pitt
The Thomas Carlin's Sons Foundry
The Three Sisters Bridges
The Turtle
The Venango Path
The Windmill
The Workers
This Memorial is Dedicated to
Three Rivers Heritage Trail
Three Rivers Stadium
Thunderbolt
Timber Court
Trinity Church Burying Ground
Trinity German Evangelical Lutheran Church
Troy Hill Fire Station #39
Troy Hill Incline
Twenty Murdered and a City Rises Up
Twenty-Four Residents
Union Local 471 American Federation of Musicians
Union Trust Company-Lawyers Title Building
United Steelworkers of America
University of Pittsburgh
University of Pittsburgh Log Schoolhouse
USS Maine Memorial
V.F.W.
Vance Fort
Veterans Memorial
Veterans Memorial
Veterans Memorial
Veterans Memorial
Veterans Memorial
Veterans of Foreign Wars of the United States
Victor Herbert
Vietnam Veterans Monument
Walker-Ewing Log House
Wall Section Through Rampart of Fort Pitt
Welcome to Point State Park
Welcome to the Frick Woods / Pennsylvania - Forest Land
West Hall
West View Memorial
Western Pennsylvania Hospital
Western Pennsylvania Tuskegee Airmen Memorial
Westinghouse Atom Smasher
Westinghouse Electric Corporation
Westinghouse Gas Wells
Westinghouse Railroad Air Brake
Who Was the Howling Mob?
William D. Boyce
William Penn Snyder House
William T. Kerr
William "Billy" Strayhorn
Work Accidents and the Law
World War I Memorial
World War I Memorial
World War I Memorial
World War I Memorial
World War II Memorial
World War II Memorial
Yohogania Courthouse
"Piazza Lavoro" and "Mythic Source," 1984
"Pittsburgh Variations," 1984
"The Bell Speaks"
"The Forks," 1984
The county's development, particularly in the 19th and 20th centuries, was heavily influenced by the rise of industry. With its abundant natural resources, including coal and iron ore, Allegheny County became a major center for steel production, earning the moniker "Steel City." The expansion of railroads and the construction of the Erie Canal further facilitated economic growth in the area.
Throughout its history, Allegheny County has been home to influential figures in politics, business, and culture. Pittsburgh, the county seat and largest city, has produced notable individuals such as Andrew Carnegie, who built a vast steel empire, and Rachel Carson, environmentalist and author of "Silent Spring." The region's thriving arts scene also includes the Carnegie Museums, the Pittsburgh Symphony Orchestra, and the Pittsburgh Opera.
In recent decades, Allegheny County has undergone a transformation from an industrial powerhouse to a more diversified economy focused on healthcare, education, technology, and robotics. Although the decline of the steel industry caused significant challenges, the county has rebounded by embracing new industries and investing in urban revitalization efforts.
Today, Allegheny County remains a vibrant and culturally rich area, with a strong spirit of resilience and innovation. Its history continues to shape its present, as the county keeps evolving and adapting to the changing economic and social landscape.
Brief timeline of the history of Allegheny County, Pennsylvania:
- 1788 - Allegheny County is established on September 24.
- 1794 - The "Whiskey Rebellion" protests occur in the county.
- 1840 - The Pennsylvania Railroad arrives in Allegheny County, stimulating industrial development.
- 1873 - The Great Railroad Strike takes place in the county.
- 1889 - The Johnstown Flood affects parts of Allegheny County.
- 1907 - The Pittsburgh Pirates, now known as the Pittsburgh Steelers, are founded in Allegheny County.
- 1968 - Pittsburgh becomes the county seat of Allegheny County.
- 1981 - The collapse of the Kinzua Bridge impacts the county's transportation infrastructure.
- 1998 - The completion of the Pittsburgh International Airport's new terminal enhances air travel in the county.
- 2018 - Allegheny County celebrates its 230th anniversary.
This timeline provides a glimpse into the major events and milestones that have shaped the history of Allegheny County, Pennsylvania.