The area of Nicodemus National Historic Site is 651,543.8840064 square meters.
The area of Fort Scott National Historic Site is 68,796.5591808 square meters.
The area of Rose Hill Plantation State Historic Site is 178,061.6825856 square meters.
The area of Pensacola Historic District is 437,060.4936192 square meters.
The area of Eatonville Historic District is 930,776.9771520001 square meters.
The area of Milton Historic District is 5,665,598.99136 square meters.
The area of Steamtown National Historic Site is 252,847.589271552 square meters.
The area of Andersonville National Historic Site is 2,080,084.2011136 square meters.
The area of Christiansted National Historic Site is 109,872.15186816 square meters.
The area of Hampton National Historic Site is 251,066.972445696 square meters.
The area of Jimmy Carter National Historic Site is 287,326.8059904 square meters.
The area of Fort Raleigh National Historic Site is 2,075,754.064741632 square meters.
The area of Lincoln Home National Historic Site is 49,533.522610176005 square meters.
The area of Hopewell Furnace National Historic Site is 3,431,734.2461952 square meters.
The area of Tuskegee Airmen National Historic Site is 180,934.95064550402 square meters.
The area of Puʻukoholā Heiau National Historic Site is 348,029.65232640004 square meters.
The area of Fort Larned National Historic Site is 2,905,642.9112832 square meters.
The area of Salem Maritime National Historic Site is 36,421.7078016 square meters.