It's time to take a religious pilgrimage.
Nearby, more Gods watch over. Yes, okay, it's like any other temple on the outside. Statuaries grouped together outside. What makes this place so special?
See the stairs? Put on a pair of slippers there, place 100 yen on the wooden tray, and descend into the bowels of the Buddha. You'll spend a large portion of your trip in complete darkness on a pilgrimage that visits 88 Buddha statues. The basement snakes through some very narrow portions, all designed to resemble passing through Buddha's intestines. Don't worry, the walls are dry.
While it is a bit out of the way from the rest of Tokyo, it is a great way to spend 100 yen and maybe you'll be enlightened too!