Rai Sanyo was a Japanese historian and thinker. The museum is dedicated to his work and presents details of his personal life.
Wikipedia (Japanese) http://ja.wikipedia.org/wiki/%E9%A0%BC%E5%B1%B1%E9%99%BD%E5%8F%B2%E8%B7%A1%E8%B3%87%E6%96%99%E9%A4%A8
Official Website http://raisanyou.com/
Address Hiroshima, Japan
Coordinates 34°23'28.977" N 132°27'26.077" E