Top sigths of USA
An excursion to Willis Tower in Chicago will be very interesting and entertaining. This is the second tallest building in the United States and its height estimates 443 metres. The building consists of 101 floors. The most entertaining object for tourists is located on the 94th floor. This is John Hancock Center - a spacious observation deck with powerful telescopes located on it. Visitors are welcome to use these telescopes to see all major sights of the city in detail.