Chicago is a famous destination for both leisure and business travel. The Windy City lies along Lake Michigan and its many skyscrapers, including the famous Sears Tower, now known as Willis Tower, define the city's skyline.
Chicago is a famously cold place to visit in the winter. During the winter months of January, February and March, low temperatures could range from about 18 F to 32 F.
Staples of Chicago tourism are the Magnificent Mile for shopping, Millennium Park and various museums. In January, check out the Chicago Boat, Sports and RV show. February offers the Lincoln Park Conservatory's Azalea and Camelia flower show. In March, there's the St. Patrick's Day Parade.
Since visitors generally consider winter to be an off season for Chicago, you could get good deals on airfare. Hotels are also likely to offer discounted rates to fill up their rooms.