1. Lake Okutama
Lake Okutama, one of Japan’s largest artificial lakes, stretches gracefully along Okutama’s scenic mountains. This vast reservoir, with a capacity of 180 million tons of water, mirrors seasonal landscapes, making it a beloved destination all year round.

Visitors can enjoy views of cherry blossoms in spring, lush greenery in summer, colorful leaves in autumn, and a serene snowy landscape in winter.
A highlight here is the iconic “Mugiyama Floating Bridge,” a memorable pathway that sways gently over the water, giving a slightly thrilling experience for those who cross it.
2. Ogouchi Dam
Standing as one of Japan’s largest water supply reservoirs, Ogouchi Dam powers Lake Okutama. Here, visitors can witness the impressive sight of water gushing from its gates.
The free observatory offers breathtaking views from over 100 meters high, making it a must-visit for those craving spectacular vistas.
A diorama and informational displays within the tower enhance visitors’ understanding of this impressive structure. The dam is also connected to the “Okutama Ikoi no Michi” hiking route, a 12-kilometer path along the Tama River, perfect for nature lovers and hikers alike.
3. Nippara Limestone Caves
Okutama’s Nippara Limestone Caves, one of the largest in Kanto, draw explorers seeking a unique underground adventure.
With cool temperatures of 11°C year-round, the caves provide a refreshing retreat from summer’s heat and warmth in winter.
The caves feature a series of striking rock formations, including Buddhist-inspired icons such as the “Hyakue Kannon” and “Enmusubi Kannon,” as well as the ethereal echo of water trickling through the “Suikinkutsu” (water harp cave).
4. Mount Mitake
Standing at 929 meters, Mount Mitake offers a variety of hiking routes that cater to all experience levels. Accessible by bus and cable car, the mountain is an inviting day-trip destination.
One popular trail is the Rock Garden circuit, a 1.5-kilometer route that winds through lush trees, moss-covered rocks, and cool mountain streams.
The summit, which houses Musashi Mitake Shrine, provides panoramic views and a tranquil atmosphere perfect for those seeking spiritual renewal.
5. Hikawa Valley
Hikawa Valley is just a seven-minute walk from Okutama Station, yet it feels worlds away from Tokyo’s hustle and bustle.
Known for its rich greenery, this area’s paths lead visitors along clear river waters, and the valley’s suspension bridges offer perfect viewpoints for photographs.
The Toke Bridge is particularly stunning in autumn when the valley’s colors reach their peak, creating a picturesque natural scene.
6. Shiramaru Dam Fishway
At the border between Kazuma Valley and Hatonosu Valley lies Shiramaru Dam Fishway, a rare fish passage that allows migratory fish to navigate past the dam.
The tunnel leading to the fishway is equipped with viewing windows, enabling visitors to observe the fish’s journey firsthand.
Afterward, enjoy views of the dam and the surrounding greenery, making it an ideal location for both sightseeing and learning about river ecology.
7. Mount Kawanori
Rising to an elevation of 1,363 meters, Mount Kawanori is perfect for seasoned hikers seeking a challenging trail with rewarding views.
Along the path lies Hyakuhiro Falls, one of the area’s tallest waterfalls. This route offers various landscapes from dense forests to mountain streams, with the summit providing awe-inspiring panoramic views of Okutama’s surroundings.
8. Hatonosu Valley
Located near Hatonosu Station, this valley’s steep cliffs and clear streams create a captivating natural landscape. Hatonosu Valley offers excellent opportunities for riverside strolls and is renowned for its stunning autumn foliage.
9. Moose Valley Camping Ground
A natural retreat offering camping facilities, Moose Valley Camping Ground provides an excellent base for travelers interested in immersing themselves in nature overnight. The area’s cabins, picnic spots, and river access make it a great destination for families and groups.
10. Tama River Rafting
For thrill-seekers, rafting along the Tama River offers an adrenaline-filled adventure. Various tours are available, ranging from beginner-friendly routes to more challenging sections. Rafting provides a unique perspective on Okutama’s stunning natural beauty.
11. Yamabushi Mountain Shrine
Situated on a forested hill, Yamabushi Shrine provides visitors with a serene and spiritual atmosphere, surrounded by lush trees and traditional Japanese architecture.
12. Koburi Pass
Koburi Pass offers one of the best scenic overlooks in Okutama. Hikers are rewarded with stunning views of Okutama’s mountains, making it a favorite for photographers.
13. Ome Tetsudo Rail Museum
This museum, located in nearby Ome City, houses a collection of historical trains and railroad artifacts, making it a fantastic side-trip for train enthusiasts.
14. Okutama Visitor Center
Before setting off on any adventure, the Okutama Visitor Center is an excellent resource. Here, you can gather detailed information about Okutama’s trails, local wildlife, and seasonal highlights.
Okutama, with its magnificent mountains, tranquil lakes, and hidden valleys, offers a rare glimpse of Tokyo’s natural side.
Perfect for a day trip or a weekend adventure, each of these destinations provides something unique to discover. Whether you’re looking to hike, camp, or simply breathe in the fresh air, Okutama’s natural beauty and peaceful ambiance make it an unforgettable escape from the city. So, the next time you’re in Tokyo, don’t miss the chance to explore this hidden paradise—Okutama awaits!