Explore the mysteries of Lake Geneva in this engaging guided tour through the city’s historic downtown and Maple Park neighborhood. Tours run every 15 minutes from 11 a.m. to 12:30 p.m. Tickets are $20 per person. Meet at the Riviera, 812 Wrigley Dr., Lake Geneva; for tickets, call (262) 248-1888 or visit blackpointestate.wisconsinhistory.org.