Allegheny Observatory
Pittsburgh, United States · built 1900
The Allegheny Observatory is an American astronomical research institution, a part of the Department of Physics and Astronomy at the University of Pittsburgh. The facility is listed on the National Register of Historic Places (ref. # 79002157, added June 22, 1979) and is designated as a Pennsylvania state and Pittsburgh History and Landmarks Foundation historic landmark.
Observatory data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).