National Register Listings in Blair County, Pennsylvania

Allegheny Furnace Allegheny Portage Railroad National Historic Site Altoona Armory Baker Mansion Blair County Courthouse Broad Avenue Historic District Central Trust Company Buildings Chimney Rocks Downtown Altoona Historic District Downtown Altoona Historic District (Boundary Increase) Etna Furnace Etna Furnace (Boundary Decrease) Etna Furnace (Boundary Increase) Fort Roberdeau Highland Hall Hollidaysburg Historic District Horseshoe Curve Isett, Jacob, House and Store Keith, D.S., Junior High School Knickerbocker Historic District Leap-the-Dips Llyswen Historic District Mishler Theatre Noble, J. L. School Penn Alto Hotel Roaring Spring Historic District Royer, Daniel, House St. John's Evangelical Lutheran Church Tyrone Armory Tyrone Borough Historic District Williamsburg Historic District