The area of Christiansted National Historic Site is 109,872.15186816 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 Hampton National Historic Site is 251,066.972445696 square meters.
Nicodemus National Historic Site covers 161 acres of land in Kansas.
The area of Minuteman Missile National Historic Site is 60,702.846336 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.
The area of Vanderbilt Mansion National Historic Site is 853,886.7051264 square meters.
The area of Friendship Hill National Historic Site is 2,731,628.08512 square meters.
The area of Fort Davis National Historic Site is 1,918,209.9442176002 square meters.
The area of Fort Laramie National Historic Site is 3,371,031.3998592 square meters.