Knox's Headquarters State Historic Site was created in 1754.
Washington's Headquarters State Historic Site was created in 1725.
The area of Washington's Headquarters State Historic Site is 28,327.9949568 square meters.
Olompali State Historic Park was created in 1977.
Historic Washington State Park was created in 1973.
State Historic Preservation Office was created in 1976.
Deutschheim State Historic Site was created in 1978.
The Barnacle Historic State Park was created in 1973.
Olana State Historic Site was created in 1872.
Mastodon State Historic Site was created in 1980.
Columbia State Historic Park was created in 1946.
Towosahgy State Historic Site was created in 1967.
Lorenzo State Historic Site was created in 1809.