The document provides information about the original World Trade Center complex in New York City. It describes the heights and owners of the twin towers, the architects and engineers involved in the design. It details the innovative tube-structure design of the towers, which had closely spaced steel columns and floor trusses extending to a central core. It also notes the unique elevator system that used express and local elevators, with sky lobbies on the 44th and 78th floors. The World Trade Center towers opened in the early 1970s and were the world's tallest buildings until the Sears Tower surpassed them in 1974.