제니아라이 벤텐 우가후쿠 신사

Plan on about a 30-minute walk from Kamakura Station, or take a taxi if you'd rather skip it. You enter through low tunnels carved into the rock, so watch your head as you duck inside the cave hollow that houses the shrine.

The main draw is the zeniarai ritual: bring coins or small bills to wash in the sacred spring water, as visitors believe the money will multiply afterward. The cave atmosphere makes it feel genuinely different from a standard shrine visit.

Despite its small size, this place draws serious crowds, so aim for an early weekday arrival if you want some quiet. Genjiyama Park is right nearby and pairs well as a second stop on the same outing.