The Himuro Mansion (or Himikyru Mansion) is a japanese urban legend about the dark history of a haunted house and the horrible murders of an entire family who lived there. They say that the video game Fatal Frame was based on a true story. Eager to solve the mystery, many people have scoured maps, trying to find the real location of Himuro Mansion.

According to the legend, the Himuro Mansion is a large, traditional Japanese house that is located in a rocky area somewhere on the outskirts of Tokyo. The mansion became famous for being the site of the worst mass murder in the history of Japan.

Terrible rituals were performed deep in Himuro Mansion, such as the Strangling Ritual, the Demon Tag Ritual, and the Blinding Ritual. The Strangling Ritual and Blinding Ritual were performed in a hidden room, not shown on the house's original plans. This room is connected to the house by a long lattice corridor that starts at the Rubble Room.

http://theunexplainedmysteries.com/Himuro-Mansion.html