This Tokasan temple of the Rinzaishu Kenchō-ji sect was originally a tantric Buddhist temple and converted to a Zen temple. The main reason to visit is for its atmospheric rock garden and teahouse where you can sip on matcha (powdered green tea) in a traditional tea ceremony (¥600). To get here, take any bus from stop 5 at Kamakura Station's east exit and get off at the Jōmyō-ji stop, from where it's a two-minute walk.
Behind the main temple is the Tomb of Ashikaga Sadauji, the father of Takauji, the founder of the Muromachi era.