Red Buttes Observatory was created in 1994.
Red Barn Observatory was created in 2006.
Red Butte Wilderness was created on 2009-03-30.
Twin Buttes Reservoir was created in 1963.
Haleakala Observatory was created in 1961.
Dearborn Observatory was created in 1889.
Kiso Observatory was created in 1974.
Stellafane Observatory was created in 1924.
Steward Observatory was created in 1916.
Union Observatory was created in 1903.
Erbil Observatory was created in 1973.
Sherwood Observatory was created in 1970.
McKim Observatory was created in 1884.