The Blackstone Hotel

The Blackstone Hotel is a historic 290-foot (88 m) 21-story hotel on the corner of Michigan Avenue and Balbo Drive in the Michigan Boulevard Historic District in the Loop community area of Chicago, Illinois. Built between 1908 and 1910, it is on the National Register of Historic Places. The Blackstone is famous for hosting celebrity guests, including numerous U.S. presidents, for which it was known as the "Hotel of Presidents" for much of the 20th century, and for contributing the term "smoke-filled room" to political parlance.