what is the scariest haunted house in america

According to the search results, the scariest haunted house in America is McKamey Manor, located in Summertown, Tennessee. It is so extreme that no one has ever successfully completed the experience, and visitors must sign a 40-page waiver, create a safe word, pass a physical, and more before being allowed to enter. The experience is so intense that it has been described as more of a torture chamber than a haunted house. McKamey Manor has been featured in several documentaries and TV shows, including Netflixs "Haunters: Art of the Scare" and "Dark Tourist". However, it is worth noting that there are other haunted houses and attractions across the country that are also considered to be extremely scary and worth visiting.