Kourin-In is a temple that has been at the present location since 1668. It is part of the Rinzai School of Buddhism, whose lineage includes the great master Hakuin who is famous for emphasizing the importance of zaken and koans as part of the training program. It is a 3 minute walk from the Hiro-O Station on the Hibiya Line and is very central and easy to get to. There are a number of temple buildings in the complex so it can be a little confusing to find the right one but keep poking your head in until you see the one with the other meditators assembling.
Morning sessions start at 7:00am every weekday morning. Each session is divided into two halves of 25 minutes each. Printouts are available in Japanese and English explaining the practice of Zazen.
Anyone is welcome without a reservation, but you won't be allowed in if you are late——the doors close at 7:00am sharp. Shakyo (sutra transcription) and shabutsu (tracing a Buddha image) sessions are also offered on Tuesdays and Fridays from 10:00am to 12:00pm.
Ruizenzan Kairin Temple
5-1-21 Hiroo Shibuya-ku,