Clemuel Ricketts Mansion was created in 1855.
Julian T. Ricketts House was created in 1928.
Ricketts Glen State Park was created in 1942.
Ricketts Point Marine Sanctuary was created in 2002.
Smith-Ely Mansion was created in 1911.
McPike Mansion was created in 1869.
Philip Mansion was created in 1895.
Duane Mansion was created in 1816.
Phillips Mansion was created in 1875.
Loudoun Mansion was created in 1801.
Ford Mansion was created in 1774.
Adena Mansion was created in 1807.
Newcomer Mansion was created in 1820.