Halfway up Iimori-yama, Sazae-dō is a weird and wonderful hidden gem in a Buddhist temple complex. Built in 1796, the 16.5m-high hexagonal wooden structure houses 33 statues of Kannon, the Buddhist goddess of mercy. Once inside you follow a fabulous, spiral, Escher-esque staircase that allows you to journey up and back down again without retracing your steps.