Zimmerwald Observatory was created in 1956.
Zimmerwald's population is 870.
The area of Zimmerwald is 8,940,000.0 square meters.
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.
Belogradchik Observatory was created in 1961.