Futarasan jinja is a Shinto shrine in the city of Nikkō, Tochigi Prefecture, Japan. It is also known as Nikkō Futarasan Shrine, to distinguish it from the Utsunomiya Futarayama Jinja, which shares the same kanji in its name. Both shrines claim the title of ichinomiya of the former Shimotsuke Province. The main festival of the shrine is held annually from April 13 to April 17. The shrine consists of three geographically separate sections. The main shrine is located between Nikkō Tōshō-gū and the Taiyū-in Mausoleum. Many visitors go to all three, as well as to Rinnō-ji, which are part of the Shrines and Temples of Nikkō UNESCO World Heritage Site. The "middle shrine" is located off the shore of Lake Chuzenji. The "inner shrine" is located at the summit of Mount Nantai, the volcano overlooking the lake. The shrine possesses two swords that are National treasures of Japan. Dozens of buildings and cultural artifacts are listed as National Important Cultural Properties. The precincts have been designated a National Historic Site. The kami enshrined at Nikkō Futarasan Jinja are: Ōkuninushi-no-Mikoto, god of nation-building, agriculture, medicine, and protective magic Tagorihime no Mikoto, one of the three Munakata goddesses Ajisukitakahikone, god of agriculture and thunder The precincts of the shrine include eight peaks of the Nikkō Mountains (Mt. Nantai, Mt. Nyōhō, Mt. Tarō, Mt. Oku-Shirane, Mt. Maeshirane, Mt. Omanago, Mt. Komanako, Mt.Akanagi) as well as the Kegon Falls. It covers 3,400 hectares, which is second only to the Ise Grand Shrine in area. The main shrine is located to the west of Nikkō Tōshō-gū where it was relocated to in 1617. The current shrine buildings date from that reconstruction. 11 buildings in the complex, including the Honden, Haiden are designated as national Important Cultural Properties. The Middle Shrine is located on the shore of Lake Chuzenji. It was built in 1096. The current buildings were reconstructed in 1699. Seven buildings in the complex including the main shrine are designated as national Important Cultural Properties.