Union Covered Bridge State Historic Site was created in 1967.
Locust Creek Covered Bridge State Historic Site was created in 1968.
Sandy Creek Covered Bridge State Historic Site was created in 1968.
State Road Covered Bridge was created in 1983.
Waveland State Historic Site was created in 1848.
Monterey State Historic Park was created in 1970.
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.
Olompali State Historic Park was created in 1977.
Deutschheim State Historic Site was created in 1978.
Historic Washington State Park was created in 1973.
McFarland State Historic Park was created in 1878.