The tower, which is 110 storeys high, is the tallest building in North America. It houses offices and retail space, but tourists can visit its “Skydeck” for fantastic views across the city.

Image: J. Crocker

The Travel Channel and Virgin Holidays are running a competition in which the first prize is a four night trip to Chicago.

The prize includes return flights for two from London’s Heathrow airport, airport transfers and four nights’ accommodation at The James Chicago hotel, which is located in downtown Chicago.

You can enter the competition via the Travel Channel website - just answer a simple question and enter your details. Entries must be received by the 28th of February, and the winner must take the prize between  10 March 2009 and 30 September 2009 (excluding peak travel periods). 

Image courtesy of Kyle Smith