How about a real zazen experience at a temple in the bamboo forest?
Yokosuka, Miura 3h15m 13
A famous bamboo tree temple, Houkokuji, offers a Zazen experience and transcription of Buddhist sutras experiences. This temple is a little strict, so you can experience authentic Zen meditation. You can see a statue of the Goddess Kannon, the symbol of Ofuna, from the train window on your journey.