A must see!
This temple has excellent renderings of symbols from Bhuddist and Chinese traditions. It is well maintained and staffed. One always feels welcomed there. The site is free, one is only asked to be respectful and not take photographs inside the temple. The literature is available in several languages. The only feature one could dislike about this site is the tremdous crowds!
It would be difficult to miss, but Id recommend this site as a "must" for any travelers to the Tokyo area. The surrounding sights, smells and tastes of Chinatown create the perfect setting for this tribute to Chinese culture.