Chesterfield Mall (formerly known as Westfield Shoppingtown Chesterfield) is a shopping mall in Chesterfield, Missouri, at the intersection of Interstate 64/U.S. Routes 40-61 and Clarkson Road (Route 340). The mall opened in 1976, built by Richard Jacobs. Chesterfield Mall includes about 30 shops, one anchor store (Macy's), three restaurants, and an AMC Megaplex theater. With of the closing of Northwest Plaza in St. Ann in 2010, Chesterfield Mall became the largest shopping mall in the St. Louis metropolitan area. In 2020, plans were announced to demolish the mall and replace it with a mixed-use development; demolition started in 2021.