Chase Tower, located in the Chicago Loop area of Chicago at 10 South Dearborn Street, is a 60 story skyscraper completed in 1969. At 850 feet (259 m) tall, it is the eleventh tallest building in Chicago, the tallest building inside the Chicago 'L' Loop elevated tracks, and the 40th tallest in the United States.  Chase Bank has its U.S. and Canada commercial and retail banking headquarters here. The building is also the headquarters of Exelon. The building and its plaza (known as Exelon Plaza) occupy the entire block bounded by Clark, Dearborn, Madison, and Monroe streets.