The Underworld Tour is an adults-only stroll through the old red-light district of the abandoned, underground city that was Seattle’s birthplace. A big-brother version of our world-famous Underground Tour, it’s seamier, raunchier and laugh-out-loud lewd-icrous. Totally inappropriate! One alcoholic drink included. Valid picture ID required. (Our attractions are the only way to tour the interconnecting tunnels of the world-famous Seattle Underground—don’t be fooled by imposters.) Tickets available in advance, online at undergroundtour.com and by phone at (206) 682-4646, or at our ticket counter at 614 First Avenue, in Pioneer Place Park, Pioneer Square.