Historical Markers in Imperial County, California
Ben Hulse Highway
Calexico Carnegie Library
Camacho's Place and Café
Camp Dunlap
Camp Gaston
Camp Salvation
City of Holtville
De Anza Overlook
Desert Tower
First Irrigation Water Into Imperial Valley
Fort Yuma
Fray Francisco Hermenegildo Garcés
Geoglyphs
Harold Bell Wright
Hernando De Alarcon Expedition - 1540
Holtville
Hotel De Anza
Imperial Irrigation District
Imperial Valley Church of the Brethren Site - Dunkard Church
Imperial Valley Desert Museum
Imperial Valley Press
Imperial Valley Swiss Club
Imperial Valley Veterans' Memorial
Leonard Knight's Salvation Mountain
McConnell Ranch
Mobley Meadows
Mormon Battalion
Mountain Springs Station Site
Obregon
Pearl Harbor Survivors Memorial
Picacho
Picacho Mines
Plank Road
Pre-Columbian Indian Trail
Salvation Mountain
Site of Camp Pilot Knob
Site of Fort Romualdo Pacheco
Site of Mission La Purisima Concepcion
Site of Mission San Pedro
Site of Rancho El Tecolote
Taylor's Ferry
The Impossible Railroad
The Island of California
The Plank Road
Tumco
United States Inspection Station
Women's 10,000 Club
Yuha Well
Yuha Well
California was once a part of Mexico before it became a U.S. state. Mexico gained independence from Spain in 1821 and California became a Mexican territory. However, in 1846, the U.S. declared war on Mexico and after a brief conflict, California was ceded to the U.S. as a part of the Treaty of Guadalupe Hidalgo in 1848.