theMART (formerly The Merchandise Mart), located in the center of the sought-after River North submarket, is interwoven into the fabric of Chicago as an innovator in culture, art, business, fashion, media and more. As the largest privately held commercial building in the United States, it is one of the world's leading commercial buildings, wholesale design centers and the preeminent international business location in Chicago. Encompassing 4.2 million gross square feet, theMART spans two city blocks, rises 25 stories, and is visited by an average of 30,000 people each business day and nearly 10 million people annually.