Christiansted National Historic Site was created on 1952-03-04.
Eugene O'Neill National Historic Site was created in 1971.
Maggie L. Walker National Historic Site was created on October 27, 1978.
Charles Pinckney National Historic Site was created on 1988-09-08.
Vanderbilt Mansion National Historic Site was created on 1940-12-18.
Fort Davis National Historic Site was created on 1961-09-08.
The area of Christiansted National Historic Site is 109,872.15186816 square meters.
Steamtown National Historic Site was created in 1995.
Saint-Gaudens National Historic Site was created in 1977.
Fort Larned National Historic Site was created in 1964.
John Muir National Historic Site was created in 1962.
Chicago Portage National Historic Site was created in 1952.
Hampton National Historic Site was created on 1948-06-22.
Friendship Hill National Historic Site was created in 1789.
Fort Scott National Historic Site was created in 1978.
Grey Towers National Historic Site was created in 1886.
Nicodemus National Historic Site was created on 1996-11-12.
Weir Farm National Historic Site was created in 1990.