Dover is the capital of Delaware and the seat of Kent County. The city, which dates back to the 1600s, is acclaimed for its lovely tree-lined streets, preserved town green, and impressive Georgian and Victorian architecture. Long a center of government, business, and agriculture, Dover has become a tourist mecca as visitors come to enjoy the city's historical offerings, tax-free shopping, and the excitement of slots, NASCAR racing, and harness racing that takes place at Dover Downs. The city was named after Dover in England and is the site of Dover Air Force Base, which houses the world's largest air cargo planes.