Fujisan Hongu Sengen Taisha is the head of all shrines dedicated to the gods of Mt. Fuji (they are called Sengen or Asama shrines and there’s more than 1300 of them throughout the country). The holy object here is Mt Fuji itself, and the top of the mountain is officially considered to be part of shrine’s grounds.
Fujisan Hongu Sengen Taisha is said to have been founded in prehistoric times, although the oldest structures now date back to Edo period. Favored by imperial family and upper samurai class, it was also the center for popular worship of Mt. Fuji, and the climbing path for pilgrims approaching the mountain from the south historically started here.
Now the shrine is part of Fujisan Cultural World Heritage Site.