Experience the iconic style that characterized the business boom of the Roaring ’20s and the expansion of downtown Chicago by entering some of the era’s most architecturally significant interiors. Visit official city landmarks like the Chicago Motor Club Building (now the Hampton Inn), home to a striking floor-to-ceiling map of the United States trimmed in silver leaf, and the Trustees System Service Building (now Century Tower), featuring elegant Algerian marble walls. The tour concludes inside the historic Merchandise Mart (now The Mart), which was the world’s largest building when it opened in 1930.