Delaware's commercial hub and largest city has handsome architecture—with good examples of styles such as Federal, Greek Revival, Queen Anne, and Art Deco—and abundant cultural attractions. Wilmington began in 1638 as a Swedish settlement and later was populated by employees of various du Pont family businesses and nearby poultry ranches. The four-block Market Street Mall marks the city center and is distinguished by
the Grand Opera House. The four-story theater, built by the Masonic Order in 1871, has a white cast-iron facade in French Second Empire style to mimic the old Paris Opera. The adjoining Giacco Building houses a smaller theater and art galleries. Outside Wilmington's compact city center are several outstanding museums, including some that are legacies of the du Ponts.