Sears Tower – Harvard Observatory of Historic Places in 1987. Sears Tower – Harvard Observatory 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
Tower Petroleum Building Tower Petroleum Building The Tower Petroleum Building (also known as The Tower Building) is a historic Art Deco Skyscraper located at 1907 Elm Street in the City Center District of Downtown Dallas. The tower, a contributing property in the Dallas Downtown Historic District and the Harwood Street Historic District, features Zig-zag Moderne styling and was designed by architect Mark Lemmon. The Tower Petroleum Building features Zig-zag Moderne motifs, one of the few buildings left in Downtown Dallas which features such designs. The building's facade is clad in limestone and has green spandrels panels between the windows. The upper floors of