Spelunk NYC

True explorers and adventurers join founder, Geoff Grandberg, in a unique five-hour tour that unearths rare and abandoned NYC locales ranging from 80 to over 200 years old, including WWII bunkers, a submarine, Cold War-era hangers and rail houses. Thurs, Sat & Sun 10 a.m. $90 per person, $250 flat rate for fewer than three people. Ticket price includes transportation to all sites, including pickup at the start of tour in Union Square. 646.509.0991.