Since we last visited cultural explorer Juergen Specht's survey of Japan's hihokan (sex museums), he's added over 150 new photographs from three more of these "Houses of Hidden Treasures". As it's probably one of the few places on the web you can look at hot barnyard animal sex and extreme snuff porn in the name of legitimate anthropological study, we recommend checking out out if you haven't done so already.
Hihokan - Erotic Museums in Japan (juergenspecht.com)
See also: Sex Museums: Hihokan
Hokkaido Hihokan
Previously: Museum of Porn in Art, The Erotic Museum (LA), Houses of Hidden Treasures