Historic Sites, Places of Scenic Beauty, and Natural Monuments of Japan

Discover Biro Island (Birōjima), a Special Natural Monument in Kagoshima Prefecture. This uninhabited island in Shibushi Bay preserves centuries-old subtropical forests with over 180 plant species, including ancient Chinese fan palms. Learn about its designation, ecology, and how to visit.

At Fujikawa Tenjin in Kagoshima, 55 old plum stocks creep along the ground like resting dragons. A Natural Monument since 1941, they bloom pale pink each February.

At the mouth of the Manose River in Minamisatsuma City, Kagoshima Prefecture, more than 1,000 hamabō shrubs form Japan's largest known colony along a kilometre-long muddy tidal flat that also shelters fiddler crabs, native hard-shell clams, and over 130 bird species, including the rare black-faced spoonbill. Designated a National Natural Monument in 2007, this estuary offers an unforgettable encounter with southern Kyushu's living nature.

Located in Soo City, Kagoshima Prefecture, Mizonokuchi Cave is a 209.5-meter-long natural cavern carved into welded tuff deposited by the Aira Caldera eruption around 29,000 years ago. As Japan's largest cave formed within pyroclastic flow deposits, it was designated a National Natural Monument in 2021—the first nationally designated cultural property in Soo City. The dramatic interplay of light and stone has also made it a beloved spiritual power spot.

The Yakushima Kawagoromo Habitat protects the world's only known population of Hydrobryum puncticulatum, a remarkable flowering plant endemic to a single river system on Yakushima Island. Designated a National Natural Monument in 2010, it clings to granite boulders in fast-flowing pristine streams.

Behind one of Kagoshima's oldest Inari shrines, in a quiet chinquapin grove in Hioki City, the rare parasitic plant Yakkosō (Mitrastemon yamamotoi) emerges briefly each autumn from the roots of its host trees. Designated a National Natural Monument in 1922, this leafless, rootless, chlorophyll-free flower resembles a tiny Edo-period footman and offers visitors a fascinating glimpse into one of Japan's most unusual botanical wonders.

Tucked into the sacred mountain of Takigawa-yama behind Yamatohama village on Amami Oshima, this rare 1.5-hectare grove preserves around 100 giant Okinawa Urajirogashi oaks—an evergreen species endemic to the Ryukyu archipelago—at the northern edge of their range. Designated a National Natural Monument of Japan in 2008, the forest reflects centuries of community stewardship.

The summit of Akita-Komagatake, an active volcano in Akita, was designated a Natural Monument in 1926 for its alpine flora, including komakusa on volcanic gravel.

Four Jomon stone circles sit side by side on a river terrace in Akita, a grouping unique in Japan. The 4,000-year-old Isedotai Site is a World Heritage component.

In Yokote, Akita, the Ōtoriiyama Site is the eleventh-century hilltop stronghold of the Kiyohara clan, with double earthen ramparts, dry moats and rare earthenware.

Ichinomegata, a freshwater maar lake on Akita's Oga Peninsula, formed when magma met groundwater in a violent blast. Its andesite holds rare mantle rock.

Kisakata in Nikaho City, Akita Prefecture, is a National Natural Monument where over 60 pine-covered hills dot rice paddies — remnants of islands that once floated in a scenic lagoon rivaling Matsushima. Shaped by Mount Chokai's volcanic collapse and an 1804 earthquake, this is the northernmost destination of Basho's Oku no Hosomichi. Discover a landscape where geology, poetry, and breathtaking seasonal beauty converge.

Discover the Tsunagigaya Natural Habitat in Tagami, Niigata — a nationally designated Natural Monument on Mt. Gomado, home to a rare variety of Japanese nutmeg-yew tree tied to the legendary Seven Wonders of Echigo.

In Itoigawa, Niigata, the Teraji Site preserves Jomon workshops where jadeite was carved for over two thousand years, beside a rare four-post stone arrangement.

A henon bamboo grove in Niigata, a National Natural Monument since 1922 for its rare reverse bamboo whose branches bend downward, tied by legend to the monk Shinran.

On a 90-metre hill behind No Hakusan Shrine, warm-climate evergreens grow beside cold-climate deciduous trees, an unusual mix designated a Natural Monument in 1937.

Central Niigata's Hakusan Park opened in 1873, among Japan's first public parks. Its ponds and Meiji stonework survive, and in 2018 it became a national scenic site.

A Nara-period county office near Nagaoka, found in 1990. A wooden tablet here names Nutari fort, a stockade once known only from a single ancient chronicle.

The Hirabayashi Castle Ruins in Murakami City, Niigata Prefecture, are a National Historic Site that served as the stronghold of the Irobe clan from the Muromachi through Azuchi-Momoyama periods. Abandoned in 1598 and remarkably unchanged for over four centuries, the site preserves medieval earthworks, moats, and fortifications in near-original condition, offering a rare glimpse into Japan's feudal past.

Furutsu Hachimanyama is the northernmost late-Yayoi hilltop moated settlement on the Japan Sea coast, and its ridge holds Niigata's largest ancient burial mound.