You can really feel Tadao Ando's architectural style here. The building is made from a million scallop shells, all pieced together by hand. It's a great example of harmony between the natural environment and living spaces.
Whenever work wasn't going well during my time in Japan, I would visit Heikenji Temple to pray for good luck. I think that's why Kawasaki Daishi is always so busy with worshippers—it really feels like it works.