3: Alcatraz Island, San Francisco
It may be an ugly remnant of the past, but the Alcatraz is worth the visit, just to see for yourself how ominous and grim the once deemed impenetrable, infamous prison island surrounded by sharks. The tour guides here are especially memorable and will teach you a lot about Alcatraz’s past. Fitting for scares, but also an important chapter of history to learn.
Address: Alcatraz Island, San Francisco, CA 94133