The Merchandise Mart is a large commercial building located in Chicago, Illinois. It serves as a hub for wholesale trade and is one of the largest buildings in the world dedicated to the design and furnishings industry. The Mart houses showrooms for various products, including furniture, textiles, and home decor. Opened in 1930, the Merchandise Mart spans over 4 million square feet and features a variety of events and exhibitions throughout the year. It is also home to several businesses and design firms, making it a key destination for interior designers, architects, and retailers seeking inspiration and products.