The largest commercial office building in the World, with over 4.1 million square feet of permanent and temporary showrooms. The location features a bank, U.S. Post Office, transportation hub stop for the "El" train, a currency exchange, food court and many retail shops to choose from. The privately owned exhibit center, The Merchandise Mart, is the home of the world's largest contract furnishing show - Neocon - held every year in June and, the country's largest casual furniture market in September, plus two gift and home markets and ten different apparel shows a year.