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.
Prudence Building The Prudence Building, or Prudence Bonds Building, was a fourteen-story edifice at the southeast corner of Madison Avenue and 43rd Street, in Manhattan, in the U.S. state of New York. It was the headquarters of the Prudence Bonds Corporation, opening in October 1923. Stores on the street level were leased to