Japan scenic viewpoint
Tenkaihō
You can see 94 km from here, looking south-west.
Calculating the panorama…
Drag to turn around. The relief is drawn 2.2 times taller so the ridges can be read; far ridges are paler, as in the real air.
The view
Up to 94 km away.
Calculated on the relief one degree at a time, up to 250 km, with the curvature of the Earth and the refraction of the air: what stands above the horizon from here.
Our own rating, from the relief and the climate only: open horizon (35 points), how far you see (25), sea and named peaks in view (20) and clear months (20).
- 94 kmFarthest ridgelooking south-west
- 95%Open horizonof the circle where the horizon is below your eyes
- 3%Seaof the circle where the horizon is the sea
- 14Peaks in viewnamed summits that rise above the relief in front
- 155 mAltitudeabove the sea, at the highest point of the viewpoint
The 14 peaks you can name from here
From west to east as you turn around: height, distance and direction. Each one links to its guide on Peakyas, our mountain atlas.
From the relief only: buildings, trees and haze are not in the model. On a hazy day you see much less; 250 km is the limit of our calculation.
The sun
The best sunsets are from October to November.
When the sun really disappears from this viewpoint — behind the relief or into the sea — and in which direction, on the 15th of each month, in local time.
- Jansouth-west4 min before the sea-level sunset27%
- Febwest4 min before the sea-level sunset29%
- Marwest2 min before the sea-level sunset32%
- Aprwest2 min before the sea-level sunset34%
- Maynorth-west6 min before the sea-level sunset31%
- Junnorth-west6 min before the sea-level sunset20%
- Julnorth-west4 min before the sea-level sunset26%
- Augwest4 min before the sea-level sunset35%
- Sepwest2 min before the sea-level sunset33%
- Octwest2 min before the sea-level sunset41%
- Novwest4 min before the sea-level sunset39%
- Decsouth-west4 min before the sea-level sunset31%
- Time: when the sun goes behind the horizon you see from here.
- Minutes: how much earlier the relief hides the sun.
- %: share of clear sky that month (NASA, 2001–2020).
The highlighted months are the clearest. Golden hour starts about an hour before.
The place
Tenkaihō.
Scenic viewpoint in Japan
Tenkaihō is a scenic viewpoint in Japan, 155 m above the sea.
On a clear day the farthest ridge you can see is 94 km away, looking south-west.
14 named peaks rise above the relief in front; the most prominent is Mount Yasuman (530 m), 31 km away.
The horizon is open, below your eyes, over 95% of the circle.
The skies are clearest from October to November.

Get there and stay
- オートフォレストナキリcampsite · 5.7 km · 2 within 10 km
- 九十九島観光ホテルplace to stay · 3.7 km · 23 within 10 km
- Sasebonearest town · 5.0 km in a straight linePlaces to stay in SaseboBooking.com · sponsored link↗
- Nagasaki Airport (NGS)nearest airport with scheduled flights · 32 km in a straight lineCar hire at FUK airport (Fukuoka)Discover Cars · sponsored link↗
Plan the visit
A guided tour, a bed nearby, a car.
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
From above
The viewpoint and its surroundings.
The satellite image of the 6 × 6 km around the viewpoint, with what OpenStreetMap shows nearby.

Around, in OpenStreetMap
- 10other viewpoints within 5 km赤崎岳, 船越展望所 いしだけ幼稚園, 展海峰 and 7 more
- 17named peaks within 5 km赤崎岳, 天神山, 石岳 and 14 more
- 9shelters and huts within 5 km
- 27car parks within 3 km
- 1visitor centres within 5 km佐世保観光情報センター
- 3restaurants and cafés within 3 km
- 2campsites within 10 kmオートフォレストナキリ
- 23places to stay within 10 km九十九島観光ホテル, 九十九島温泉花みずSASPA, Navy Gateway Inns & Suites and 20 more
- cable car and funicular stations within 5 km
- marked trails within 3 km
Counted in OpenStreetMap, the map anyone can edit. A low number may just mean nobody has mapped it yet.
In our other atlases
What you see from Tenkaihō, and what is near.
Everything around this viewpoint — mountains, water, forests, birds, caves and the night sky — in the family's atlases.
Figures from the sister sites' databases (Wikidata, HydroATLAS, GeoNames, OpenStreetMap, GBIF). Links open when each site is online.
Photographs
The view, as people saw it.
Where these figures come from
| Name and type | Wikidata (Q11465727) · CC0 |
|---|---|
| Sun | J. Meeus, Astronomical Algorithms |
| Peaks in view | Peakyas (Wikidata, CC0) |
| Panorama and altitude | Copernicus DEM GLO-90 / GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Clouds | NASA POWER (CERES SYN1deg, 2001–2020; MERRA-2) |
| What is around | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Sister atlases | Peakyas, Islandyas, Coastya, Forestyas |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers, canyons, caves, dark skies, viewpoints, birdwatching or forests?
Same idea, other landscapes: field atlases built on open data, in seven languages.






