An observatory is a room or location positioned to give a superior view of something. The word is generally used in connection with astronomy where an observatory is a building which houses a telescope and such apparatus as is required to view the planets and stars.
Those are the observatories.
The name of the observatory in Chicago is the Adler Planetarium.
Madras Observatory was created in 1786.
Modra Observatory was created in 1988.
Stellafane Observatory was created in 1924.
It isn't clear what you mean with "such".
The singular possessive form for the noun observatory is observatory's.Example: The observatory's admission is half price for children.
Those are the observatories.
At the Royal Observatory in Greenwich, England, which is located on the Prime Meridian.
The name of the observatory in Chicago is the Adler Planetarium.
No, Mount Wilson Observatory and Griffith Observatory are two distinct observatories in Los Angeles. Mount Wilson Observatory is located in the San Gabriel Mountains and is known for housing the Hooker Telescope, while Griffith Observatory is located in Griffith Park and is a popular public observatory with educational exhibits and planetarium shows.
The observatory is in Green Bank.
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.