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Vatican Observatory

Castel Gandolfo, Vatican City · built 1891

The Vatican Observatory (Specola Vaticana) is an astronomical research and educational institution supported by the Holy See. Originally based in the Roman College of Rome, the Observatory is now headquartered in Castel Gandolfo, Italy and operates a telescope at the Mount Graham International Observatory in the United States.

Observatory data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

Other observatories in Vatican City