Elliot Erwitt exhibition at Nihonbashi Mitsukoshi (7th floor) was quite good. If you like Italy, the Pope, US presidents, or dogs, you should see it. It’s held together with the Italian Fair (food and products) on the same floor. Too bad it’s only 5 days longs, till April 16, 2012.
http://www.mitsukoshi.co.jp/store/1010/elliott/