UNKAI Terrace and Unique Viewing Spots

UNKAI Terrace, a three-story observation deck

The observation deck, which will be renovated and reopened in 2021, juts out into the air. The first floor of the 12-meter-high, three-story observation deck rises into the air, and visitors standing at the top of the deck feel as if they are on a boat, floating out into the sea of clouds. From the top floor, you can enjoy a wide view of nature's spectacular scenery, including the sea of clouds stretching far into the distance, the Hidaka Mountains, and the sun rising over the mountains.

Seven viewing spots to enjoy the sea of clouds to the fullest

There are seven unique viewing spots along the mountain path. The "Cloud Pool" is a three-dimensional deck shaped like a cloud and covered with netting like a hammock, where you can rest your body and experience the feeling of floating above the clouds. The "Cloud Walk," which looks like a suspension bridge jutting out from the mountainside, allows visitors to enjoy the thrill of walking on clouds. It is like playing in a cloud theme park, creating a special moment that can only be experienced here.

Cloud Round, a new observation spot that gives you a floating sensation as if you are floating in the sky

Cloud Round" opened in July 2025 as the seventh observation spot. It is characterized by benches hanging from a curved mirror frame, and when you sit on them, you feel as if you are floating in the sky. It looks as if you are floating in the sky when you sit on it. The view is exceptional because it is located at the highest elevation among the many viewing spots at UNKAI Terrace. The view of the sea of clouds spreading out below you and the comfortable feeling of floating in the air can be experienced. Enjoy the different views depending on where you sit.

More Unique Observation Spots

The other observation spots are also full of ideas. The "Cloud Bed," where you can relax and enjoy the view by leaning on large and small cushions that resemble cloud particles, the "Contour Bench," a 117-meter-long bench built into the slope of the mountain where you can enjoy the view from any height and angle you like, and the "Bow of the Ship," which looks like the bow of a ship breaking through a sea of clouds, offer a view of the Great Wall of the Pacific. The "Sky Wedge" offers a panoramic view from an observation deck that looks like the bow of a ship breaking through a sea of clouds. At the "Cloud Bar," you can sit on a chair higher than the trees that cover the slope and get a bird's-eye view.

Local Guide
Supporters

Under the "Cloud9 (Cloud Nine) Plan," which proposes nine ways to spend time at UNKAI Terrace, seven viewing spots have been set up to enjoy the sea of clouds. Various plans are underway to create this unparalleled happiness.

Cloud Cafe" where you can spend time while gazing at the spectacular view.

Take a break while gazing at the sea of clouds

You will never get tired of looking at the mysterious sight of lush green mountains in the distance, clouds that change and flow with the wind, and the view below from an altitude of 1,088 meters. The UNKAI Terrace was started by the staff/staff members of the ski resort who maintained the gondolas in the summer and wanted Guest/customers to be able to see the sea of clouds that they saw on a daily basis. The "Cloud Cafe" is located in the "UNKAI Terrace," just off the gondola, and can be easily visited.

Original menu focused on clouds

At the Clouds Cafe, you can enjoy original and impactful cloud-inspired sweets and drinks. The most popular item is the "Cloud Soft," which has a volume reminiscent of a cloud. The "Cloud Cake," with its refreshingly sour haskap sauce and light cream, is also a perfect match. A very photogenic dish. It is also a photogenic dish. The "Cloud Sea Ore," a drink with two layers of milk and butterfly pea tea that expresses a blue sky and a sea of white clouds, is also a visually pleasing drink. Enjoy an exceptional morning while gazing at the spectacular view.

Local Guide
Supporters

Coffee and other refreshments are available for those who are chilled by the cool morning air. Please enjoy a luxurious moment while admiring the spectacular view.

Climbing Mt. Tomamu, where you can experience a sense of oneness with nature

Take a 40-minute one-way trek early in the morning

When the area around the "Sea of Clouds Gondola Summit Station" is completely covered with clouds, why not try climbing Mt. Although the elevation difference from the gondola station to the summit of Mt. Tomamu is only 150 meters, the clouds sometimes break near the summit and create a sea of clouds.
After submitting an entry form at the trailhead, climb up the zigzagging, gradual slope to the summit. From the summit, you can see Mt. Furano and Mt. Tokachi, and if you are lucky, a 360-degree sea of clouds.

Be healed by the magnificent view and pretty flowers near your feet

Tomamu is 1,239 meters above sea level, and although it is not a very high mountain, the area around the summit is a severe environment, known as the "forest limit," where no trees can grow, making it a great place to observe alpine flora with only a short climb. The best part of the climb is not only the beautiful scenery in the distance, but also the search for small plants and flowers that live robustly in this harsh environment.
The trail is narrow and sometimes you will walk on rocky surfaces, so be sure to bring comfortable shoes and a jacket for safety and enjoyment, as the temperature at the summit is cooler.

Local Guide
Supporters

You can enjoy a panoramic view of the Daisetsuzan mountain range and other mountains from here. Climbing a mountain while soaking up the morning sun is a special experience.

Kumonkai Guide" reveals the wonders of the sea of clouds

Easy-to-understand explanation of the mechanism of cloud sea formation

The sea of clouds at Tomamu is a mysterious natural phenomenon created by a combination of special topography, weather, temperature, humidity, wind direction, and many other conditions. UNKAI Terrace is a rare place where you can see three types of cloud seas: the Pacific sea of clouds, which is created by the dynamic flow of clouds from the Pacific Ocean; the Tomamu sea of clouds, which is created by radiative cooling; and the bad-weather sea of clouds, which occurs when the weather is bad.
The view will look different when you listen to the "cloud sea guide" who explains the mechanism of cloud sea and the conditions of the day in an easy-to-understand manner.

Local Guide
Supporters

Tomamu. The "Kumokai Guide" will be happy to answer simple questions and provide detailed information on the mechanism of Tomamu's sea of clouds.

UNKAI Terrace

• Hoshino Resorts Tomamu, Shimukappu-mura, Yufutsu-gun, Hokkaido MAP
• 10 minutes by car from the Tomamu IC of the East Hokkaido Expressway.
  13 min. one way by gondola from "Resort Center
• May 13 - October 13, 2026
  5:00~8:00 (last gondola ride up), 9:00 (last gondola ride down)
  Operating hours may vary depending on the season.
  Operation may be cancelled due to weather conditions.
• Open all year round (closed: late October to early May)
• Adults 2,500 yen, elementary school students 1,600 yen, pets 500 yen
  Free for preschool children
  Free for guests staying at Hoshino Resorts RISONARE Tomamu and Tomamu the Tower by Hoshino Resorts.
• From the 2026 season, "advance reservation of admission time" will be introduced to reduce crowding. Details will be available on the official website on 4/6.