Macfarlane Observatory was created in 1757.
Jura Observatory was created in 1993.
Detroit Observatory was created in 1854.
Sphinx Observatory was created in 1937.
Ursa Observatory was created in 1926.
Carter Observatory was created in 1937.
Corralitos Observatory was created in 1961.
Stonyhurst Observatory was created in 1838.
Cincinnati Observatory was created in 1843.
Shattuck Observatory was created in 1854.
Bradley Observatory was created in 1950.
Toulouse Observatory was created in 1733.
Fuertes Observatory was created in 1917.