Pennsylvania - Criteria: C (architecture/engineering)
| Bangor Episcopal Church |
| Banks Covered Bridge |
| Baptist Institute for Christian Workers |
| Barclay House |
| Barclay House |
| Barnard, William J., Residence |
| Barns-Brinton House |
| Barrett, Rufus, Stone House |
| Barronvale Bridge |
| Bartlett School |
| Barto Bridge |
| Barton, Clara, School |
| Bartram, John, High School |
| Bartram's Covered Bridge |
| Basch & Fisher Tobacco Warehouse |
| Bauern Freund Print Shop |
| Baumgardner's Mill Covered Bridge |
| Bausman Farmstead |
| Baxter High School |
| Bayard School |
| Beallsville Historic District |
| Bear Creek Village Historic District |
| Beatty's Mills Factory Building |
| Beaver Historic District |
| Beaver, Thomas, Free Library and Danville YMCA |
| Bechdel II, Christian, House |
| Beck House |
| Bedford County Alms House |
| Bedford Historic District |
| Bedford School |
| Bedford Springs Hotel Historic District |
| Beeber, Dimner, Junior High School |
| Beechdale Bridge |
| Beechwood Elementary School |
| Belgravia Hotel |
| Bellefonte Armory |
| Bellefonte Forge House |
| Bellefonte Historic District |
| Bellemonte Silk Mill |
| Bellevue Stratford Hotel |
| Bell, John C., House |
| Bell, John, Farm |
| Bellman's Union Church |
| Bells Mills Covered Bridge |
| Bell Telephone Company Building |
| Bell Telephone Company of Pennsylvania Western Headquarters Building |
| Bell Telephone Exchange Building |
| Belmont |
| Belmont Avenue Bridge in Philadelphia |
| Belmont School |
| Beltzhoover Elementary School |
| Benjamin Franklin Hotel |
| Bently Hall |
| Bergdoll, Louis, House |
| Bergdoll Mansion |
| Bergy Bridge Historic District |
| Berk, Daniel, Log House |
| Berkheimer, Henry and Elizabeth, Farm |
| Berkley Historic District |
| Berwick Armory |
| Bethel African American Episcopal Church of Monongahela City |
| Bethlehem Armory |
| Bethlehem Silk Mill |
| Bethlehem Steel Lehigh Plant Mill #2 Annex |
| Beth Sholom Synagogue |
| Beulah Presbyterian Church |
| B.F. Good & Company Leaf Tobacco Warehouse |
| Biever House |
| Billmeyer, Daniel, House |
| Billmeyer House |
| Billmeyer, Michael, House |
| Bindley Hardware Company Building |
| Bindnagles Evangelical Lutheran Church |
| Birchrunville General Store |
| Birchrunville Historic District |
| Bird-in-Hand Hotel |
| Birmingham Bridge |
| Birmingham Public School |
| Birney, Gen. David B., School |
| Bishop, John, House |
| Bishop Mackay-Smith House |
| Bittenbender Covered Bridge |
| Bitzer's Mill Covered Bridge |
| Bixler, Michael and Magdealena Farmstead |
| Black Horse Inn |
| Black Horse Tavern |
| Black Moshannon State Park Day Use District |
| Black Moshannon State Park Family Cabin District |
| Black Moshannon State Park Maintenance District |
| Black Rock Bridge |
| Black, William, Homestead |
| Blair County Courthouse |
| Blairsville Armory |
| Blankenburg, Reudolph, School |
| Bloomsburg Historic District |
| Blythe, Benjamin, Homestead |
| B'Nai Jacob Synagogue |
| Boal Mansion |
| Boalsburg Historic District |
| Board of Education Building |
Data from United States Park Service and Wikidata
