Gateway Tower (Chicago) Gateway Tower (Chicago) The Gateway Tower is a conceptual proposal to illustrate a potential use of the abandoned site once planned to house the Chicago Spire in the Streeterville neighborhood of the Near North Side of Chicago. The plans call for a building tall and feature commercial elements that augment residential use. It is the result of a company-wide internal competition at Gensler to replace the Chicago Spire. , the building is conceptual, and "Maxim" writer, Scott Tharler, considered the project unlikely. The building would include condos, apartments, a hotel, a Skylobby, a Skydeck with a restaurant, an amusement ride
Willis Tower unfinished World Trade Center to become the world's tallest building. The height was restricted by a limit imposed by the Federal Aviation Administration (FAA) to protect air traffic. The financing of the tower was provided by the Sears company. It was topped with two antennas to permit local television and radio broadcasts. Sears and the City of Chicago approved the design, and the first steel was put in place in April 1971. The structure was completed in May 1973. The construction cost about US$150 million at the time, equivalent to $ million in 2019. By comparison, Taipei 101, built in