Sears Tower – Harvard Observatory
Cambridge, United States
The Sears Tower–Harvard Observatory is a historic astronomical observatory that is part of Harvard Observatory and is located at 60 Garden Street in Cambridge, Massachusetts. Now just a portion of the observatory's Building A, the Sears Tower is the oldest portion of the complex, designed by Isaiah Rogers and constructed in 1843. This structure is a square brick building, with a projecting cornice and a Greek Revival entrance framed by pilasters. The dome was equipped with a 15-inch telescope, the state of the art at the time. The tower was listed on the National Register of Historic Places in 1987.
Observatory data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).