In 2015 the Blackstone company bought the building. This month marked four years since the former Sears Tower was re-christened Willis Tower, and the new name has yet to stick." It began when a news reporter of the Chicago Tribune said in 2013 that "We're stubborn about such things. The naming rights issue continued into 2013. An online petition was created to change their decision. Time magazine called the name change one of the top 10 worst corporate name changes. The building's name was changed to Willis Tower in July 2009 after the Willis Group bought the skyscraper. In 1996, the Petronas Twin Towers in Kuala Lumpur, Malaysia became the world's tallest buildings. That made the overall height 1,730 feet (527 meters)īefore Willis Tower was completed, the tallest building in the world was the World Trade Center. On June 5, 2000, the western antenna was made longer to improve reception of local NBC. That made the building 1,707 feet (520 meters) tall. In February 1982, two television antennas were added to the tower. There are about 40,000 sprinkler heads in the building.
The building was built with a fire sprinkler system, even though it wasn't required at the time. That is equivalent to $800 million in 2014. The first steel was put in place in April 1971. Steel was transported from South Chicago. Sears and the City of Chicago approved the design. It was renamed after the Willis Group bought it. Until July 16, 2009, the building was called Sears Tower. More than one million people visit its observation deck every year. It is one of the most popular tourist destinations in Chicago. It is the second tallest skyscraper in the Americas. It is the eighth-tallest freestanding structure in the world. Willis Tower is the second-tallest building in the United States. It was designed by Fazlur Khan and Bruce Graham. From the ground to the roof it is 442 meters (1,450 feet) tall. It was the tallest building in the world from 1973 to 1996. Sears, Roebuck and Company paid for it to be built in August 1970.
Willis Tower is a skyscraper in Chicago, Illinois. The Willis Tower, then known as the Sears Tower, in 1998Ĥ1★2′44″N 87☃8′09″W / 41.8789°N 87.6358°W / 41.8789 -87.6358ġ08 (+3 basement floors), 110 floors including mechanical.ġ04, with 16 double-decker elevators, made by Westinghouse, modernized by Schindler Group
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