2. Nightmare on 13th Haunted House — Salt Lake City, Utah
Why it'll freak you out: Every year this highly-rated haunted house has an entirely new theme, which they call a "nightmare." If you're not convinced about how badass it actually is, here's a chilling fact: It's been voted one of America's scariest attractions by the Travel Channel.
6. Pennhurst Asylum — Spring City, Pennsylvania
Why it'll freak you out: Most of the artifacts in this hospital-themed haunted asylum are from the original administration building, dating back to the early 1900s. Spooky.
—Amanda Dawkins, Facebook
7. Netherworld Haunted House — Norcross, Georgia
Why it'll freak you out: Whichever of the two haunted houses you choose, you'll be surrounded by plague-stricken, undead spirits who are trying to drag you into their underworld of suffering. Take a deep breath.
—TeKiesha Brady, Facebook
11. McKamey Manor — San Diego, California
Why it'll freak you out: This place is pretty controversial, because it describes itself as not just a haunted house, but "an audience participation event in which you live your own horror movie." They even warn you not to wear expensive clothes or bring anything that can't get wet.
—Kate McMeow, Facebook
13. Hotel of Horror — Saylorsburg, Pennsylvania
Why it'll freak you out: This haunted attraction changes its themes every year, with seriously terrifying themes like "Puppet Pandemonium" and "Spirit Sacrifice." They've also recently added a coffin ride, that "takes you on your own afterlife experience and back again."
15. City of the Dead — Henderson, Colorado
Why it'll freak you out: This zombie-themed haunted house centers around a twisted town where humans are complete outsiders, and you have to venture the streets of crashed cars and crumbling buildings and try to survive.
—Myranda Whitesides, Facebook
19. Haunted Hoochie — Columbus, Ohio
Why it'll freak you out: Only adults are allowed at this beyond haunted attraction that has insane amounts of gore — and some of the gore is real. They advise on their website that it may not be suitable for "immature audiences OR mature audiences." Have fun.