Macroscopic Observatory was created in 2009.
Erbil Observatory was created in 1973.
Steward Observatory was created in 1916.
Bosscha Observatory was created in 1923.
Mead Observatory was created in 2001.
Goodsell Observatory was created in 1886.
Cloudcroft Observatory was created in 1962.
Foothill Observatory was created in 1965.
Union Observatory was created in 1903.
Sherwood Observatory was created in 1970.
Custer Observatory was created in 1947.
Dominion Observatory was created in 1905.
Neuchâtel Observatory was created in 1858.