1. San Francisco: Exploratorium After Dark Entry Ticket (18+)
Lose yourself in hundreds of interactive exhibits exploring perception, art, and science at After Dark at the Exploratorium. Enjoy everything from a fog bridge to a large-scale kaleidoscope, dazzling light displays, mind-bending mirrors, and more. Grab your friends and a drink and get immersed in the evening's adults-only programming, featuring unique guest speakers, great music, cutting-edge films, and one-of-a-kind activities.