National Register listings in Blair County, Pennsylvania
Most notable listings
Allegheny Portage Railroad National Historic Site NHL Johnstown · District · listed 1966 
Horseshoe Curve NHL Altoona · Structure · listed 1966 
Leap-the-Dips NHL Altoona · Structure · listed 1991 
Allegheny Furnace Altoona · Structure · listed 1991 
Altoona Armory Altoona · Building · listed 1991 
Baker Mansion Altoona · Building · listed 1975 
Blair County Courthouse Hollidaysburg · Building · listed 1976 
Broad Avenue Historic District Altoona · District · listed 2002 
Central Trust Company Buildings Altoona · Building · listed 1984 
Downtown Altoona Historic District Altoona · District · listed 1992 Historic districts (13)
- Allegheny Portage Railroad National Historic Site — Johnstown
- Broad Avenue Historic District — Altoona
- Downtown Altoona Historic District — Altoona
- Downtown Altoona Historic District (Boundary Increase) — Altoona
- Etna Furnace — Williamsburg
- Etna Furnace (Boundary Decrease) — Mt. Etna
- Etna Furnace (Boundary Increase) — Mt. Etna
- Hollidaysburg Historic District — Hollidaysburg
- Knickerbocker Historic District — Altoona
- Llyswen Historic District — Altoona
- Roaring Spring Historic District — Roaring Spring
- Tyrone Borough Historic District — Tyrone
- Williamsburg Historic District — Williamsburg
All listings
Places: Altoona (16) · Hollidaysburg (4) · Williamsburg (3) · Mt. Etna (2) · Culp (2) · Tyrone (2) · Johnstown (1) · Arch Spring (1) · Roaring Spring (1)
| Name | Place | Type | Listed |
|---|---|---|---|
| Allegheny Furnace | Altoona | Structure | 1991 |
| Allegheny Portage Railroad National Historic Site NHL | Johnstown | District | 1966 |
| Altoona Armory | Altoona | Building | 1991 |
| Baker Mansion | Altoona | Building | 1975 |
| Blair County Courthouse | Hollidaysburg | Building | 1976 |
| Broad Avenue Historic District | Altoona | District | 2002 |
| Central Trust Company Buildings | Altoona | Building | 1984 |
| Chimney Rocks | Hollidaysburg | Site | 2021 |
| Downtown Altoona Historic District | Altoona | District | 1992 |
| Downtown Altoona Historic District (Boundary Increase) | Altoona | District | 2004 |
| Etna Furnace | Williamsburg | District | 1973 |
| Etna Furnace (Boundary Decrease) | Mt. Etna | District | 1991 |
| Etna Furnace (Boundary Increase) | Mt. Etna | District | 1991 |
| Fort Roberdeau | Culp | Site | 1974 |
| Highland Hall | Hollidaysburg | Building | 1978 |
| Hollidaysburg Historic District | Hollidaysburg | District | 1985 |
| Horseshoe Curve NHL | Altoona | Structure | 1966 |
| Isett, Jacob, House and Store | Arch Spring | Building | 1997 |
| Jaffa Mosque | Altoona | Building | 2025 |
| Keith, D.S., Junior High School | Altoona | Building | 2011 |
| Knickerbocker Historic District | Altoona | District | 2002 |
| Leap-the-Dips NHL | Altoona | Structure | 1991 |
| Llyswen Historic District | Altoona | District | 2002 |
| Mishler Theatre | Altoona | Building | 1973 |
| Noble, J. L. School | Altoona | Building | 1996 |
| Penn Alto Hotel | Altoona | Building | 1989 |
| Roaring Spring Historic District | Roaring Spring | District | 1995 |
| Royer, Daniel, House | Williamsburg | Building | 1975 |
| St. John's Evangelical Lutheran Church | Culp | Building | 1978 |
| Tyrone Armory | Tyrone | Building | 1989 |
| Tyrone Borough Historic District | Tyrone | District | 1993 |
| Williamsburg Historic District | Williamsburg | District | 1995 |
State Historic Preservation Office
Nominations, tax-credit certifications and official records for Pennsylvania go through the Pennsylvania State Historic Preservation Office. See how to nominate a property.