What building was built earlier,  Manhattan Life Insurance Building or 15 Penn Plaza?
15 Penn Plaza 15 Penn Plaza, also known as the Vornado Tower, is a proposed 68-story tower in the Midtown Manhattan section of New York City planned by Vornado Realty Trust. It would have 430 units and 2,050,000 square feet (190,451 m²) of floor space. The Hiller Group is the designer. Despite only having 68 floors, it would be just 10 m shorter than the Empire State Building, which has 102 floors.
City View (Pittsburgh) City View is a 300 ft (91m) highrise in Pittsburgh, Pennsylvania. It was completed in 1964 and has 24 floors. It is tied with the Commonwealth Building and The Carlyle for the 26th tallest building in Pittsburgh. It was designed by I.M. Pei. From its inception in 1964 until 2014 it was known as "Washington Plaza".