As you know Wavisavi, you will more enjoy Japan.
Mitsui memorial museum
This museum has Japanese traditional tea ceremony room. It’s national treasure! The museum is owned by The Mitsui’s which makes great wealthy in Japan. This family collected many precious and traditional possessions. Some of them regards as important cultural properties. The outlook of the museum seems like Western style but it has lots of “wavisabi ” things. You can’t miss it! The museum was built in 2005 and located in Chuo ward in Tokyo. It opened from 10a.m to 5p.m. On Mondays the museum is closed. Let’s visit and know Japanese cultural aspect!
thumbnail from http://www.mitsui-museum.jp/floorguide/floor_map.html