Ise Jingu Inner Shrine (Naiku)
Ise Jingu's Naiku is the most sacred site in Shinto religion, enshrining the sun goddess Amaterasu and considered the spiritual home of the Japanese nation. The main hall is rebuilt completely every 20 years in the sengu ceremony — a 1,300-year-old practice of ritual renewal — with the next rebuilding due in 2033. Entry to the outer gravel precincts is free, though the inner sanctum itself is screened from view, making the forested approach through ancient cedar trees as powerful as any building.