Pennsylvania - Criteria: C (architecture/engineering)
| Bobb, Barnett, House |
| Boekel Building |
| Bogert Covered Bridge |
| Boggs Avenue Elementary School |
| Boiling Springs Historic District |
| Bok, Edward, Vocational School |
| Bomberger's Distillery |
| Bonifels |
| Bonnet's Tavern |
| Boonecroft |
| Boone, Daniel, School |
| Booth Farm |
| Borneman Mill |
| Borough Hall of the Borough of Waynesboro |
| Boston Store |
| Boswell Historic District |
| Boughner, Alexander V., House |
| Bowman Homestead |
| Bowman, Jacob, Tobacco Warehouse |
| Bowman's Castle |
| Bowmansville Roller Mill |
| Boyce Station |
| Boyer-Mertz Farm |
| Boyer, Riter, House |
| Bradford Armory |
| Bradford County Courthouse |
| Bradford, David, House |
| Bradford Downtown Historic District |
| Bradford Friends Meetinghouse |
| Bradford Old City Hall |
| Brandywine Building and Loan Assoc. Rowhouses |
| Brandywine Summit Camp Meeting |
| Breezedale |
| Bregy, F. Amadee, School |
| Brendle Farms |
| Breslyn Apartments |
| Brewerytown Historic District |
| Breyer, Henry W., Sr., House |
| Bridesburg School |
| Bridge 182+42, Northern Central Railway |
| Bridge 5+92, Northern Central Railway |
| Bridge 634, Northern Central Railway |
| Bridge between East Manchester and Newberry Townships |
| Bridge between Guilford and Hamilton Townships |
| Bridge between Madison and Mahoning Townships |
| Bridge between Monroe and Penn Townships |
| Bridge in Albany Township |
| Bridge in Athens Township |
| Bridge in Bangor Borough |
| Bridge in Brown Township |
| Bridge in Buckingham Township |
| Bridge in Cherrytree Township |
| Bridge in City of Wilkes-Barre |
| Bridge in Clinton Township |
| Bridge in Cumberland Township |
| Bridge in Dreher Township |
| Bridge in East Fallowfield Township |
| Bridge in East Fallowfield Township |
| Bridge in Fishing Creek Township |
| Bridge in Franconia Township |
| Bridge in Franklin Township |
| Bridge in French Creek Township |
| Bridge in Gibson Borough |
| Bridge in Greenwood Township |
| Bridge in Hatfield Township |
| Bridge in Heidelberg Township |
| Bridge in Jefferson Borough |
| Bridge in Jenner Township |
| Bridge in Johnstown City |
| Bridge in Lewis Township |
| Bridge in Lykens Township No. 1 |
| Bridge in Lykens Township No. 2 |
| Bridge in Metal Township |
| Bridge in Newport Borough |
| Bridge in Nicholson Township |
| Bridge in Oil Creek Township |
| Bridge in Portage Township |
| Bridge in Porter Township |
| Bridge in Radnor Township No. 1 |
| Bridge in Radnor Township No. 2 |
| Bridge in Reed Township |
| Bridge in Rockdale Township |
| Bridge in Shaler Township |
| Bridge in Snake Spring Township |
| Bridge in Solebury Township |
| Bridge in South Beaver Township |
| Bridge in Tinicum Township |
| Bridge in Upper Merion Township |
| Bridge in Washington Township |
| Bridge in West Earl Township |
| Bridge in West Fallowfield Township |
| Bridge in West Mead Township |
| Bridge in Westover Borough |
| Bridge in West Wheatfield Township |
| Bridge in Williams Township |
| Bridge in Yardley Borough |
| Bridge Valley Bridge |
| Bridgewater Historic District |
| Brier Hill |
| Brimmer, John, Tobacco Warehouse |
Data from United States Park Service and Wikidata
