With its unmistakable presence on the banks of the Chicago River in downtown Chicago, The Merchandise Mart is interwoven into the fabric of Chicago’s history and its role as a leading innovator in culture, art, business, fashion, media and more. The Merchandise Mart is the world’s largest commercial building, wholesale design center and one of Chicago’s premier international business locations. Encompassing 4.2 million gross square feet, The Mart spans two city blocks and rises 25 stories.