Seven Wonders of the Modern World 1. The Empire State Building, New York, New York The Empire State Building was completed on November 13, 1930, and: at 102 floors(1454 feet from bottom to top) was the largest building in the world at the timeSeven Wonders of the Modern World 1. The Empire State Building, New York, New York The Empire State Buildingwas completed on November 13, 1930, and at 102 floors (1454 feet from bottom to top)was the largest building in the world at the time