Sisinkai Headquarters

Last fall, I was driving around looking for a spot to eat a bento. I found this road, wide and clean. It looked like an entrance for a temple. Yes, I looked like a temple but I have never seen such kind of architecture in Shinto or Boudhist. This is the headquarters of the Sisinkai. The 思親会 is a new religion of the Lotus sutra system. Religion founded in 1938, feb 11th.
This is the only information I could get so I imagine it as a minor religion.

Here a slideshow from someone who went there during the Sakura

http://www6.ocn.ne.jp/~tougaku/top/006kankou/004sisinkai/sisinkai.htm
Map