France observation tower
Perret tower (Grenoble)
You can see 65 km from here, looking north-east.
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 65 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).
- 65 kmFarthest ridgelooking north-east
- 90%Open horizonof the circle where the horizon is below your eyes
- 81Peaks in viewnamed summits that rise above the relief in front
- 215 mAltitudeabove the sea, at the highest point of the viewpoint
The 81 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 July to September.
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-west52 min before the sea-level sunset27%
- Febsouth-west68 min before the sea-level sunset31%
- Marwest40 min before the sea-level sunset36%
- Aprwest44 min before the sea-level sunset37%
- Maywest50 min before the sea-level sunset32%
- Junnorth-west48 min before the sea-level sunset42%
- Julnorth-west50 min before the sea-level sunset50%
- Augwest46 min before the sea-level sunset49%
- Sepwest42 min before the sea-level sunset45%
- Octwest58 min before the sea-level sunset34%
- Novsouth-west56 min before the sea-level sunset27%
- Decsouth-west56 min before the sea-level sunset28%
- 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
Perret tower (Grenoble).
Tower in France
Perret tower (Grenoble) is an observation tower in France, 215 m above the sea.
On a clear day the farthest ridge you can see is 65 km away, looking north-east.
81 named peaks rise above the relief in front; the most prominent is Mont Blanc (4,806 m), 114 km away.
The horizon is open, below your eyes, over 90% of the circle.
The skies are clearest from July to September.
Get there and stay
- Going upHours in OpenStreetMap: Jul,Aug: Tu-Su 10:00-19:00; Sep-May: We,Th 09:30-17:00; Sep-May: Fr-Su · ticket requiredOfficial site↗
- Les 3 Pucellescampsite · 3.5 km · 7 within 10 km
- RockyPopplace to stay · 0.4 km · 94 within 10 km
- Grenoblenearest town · 1.7 km in a straight linePlaces to stay in GrenobleBooking.com · sponsored link↗
- Grenoble Alpes Isère Airport (GNB)nearest airport with scheduled flights · 37 km in a straight lineCar hire at GNB airport (Grenoble)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
- 96other viewpoints within 5 kmBelvédère Vauban, Terrasse des Géologues, Le Bigot - Commune de Saint-Martin-d'Hères and 93 more
- 9named peaks within 5 kmLe Fournet, Mont Jalla, Mondieu and 6 more
- 14cable car and funicular stations within 5 kmBastille, Tyrolienne géante, Tyrolienne initiation and 11 more
- 70marked trails within 3 km
- 988shelters and huts within 5 kmPotié, Oxford, Centre du Graphisme and 985 more
- 2,036car parks within 3 km
- 8visitor centres within 5 kmOffice de Tourisme, Grenoble, Bureau d'Information Touristique Bastille, Agence de Mobilité StationMobile and 5 more
- 633restaurants and cafés within 3 km
- 7campsites within 10 kmLes 3 Pucelles, Aire de camping-car de Sassenage, CCAS and 4 more
- 94places to stay within 10 kmRockyPop, Hôtel Mercure Grenoble Alpotel, Hôtel d'Angleterre and 91 more
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 Perret tower (Grenoble), and what is near.
Everything around this viewpoint — mountains, water, forests, birds, caves and the night sky — in the family's atlases.
Peakyas98 mountains within 25 km
Forestyas2 forests and trees within 15 km
Canyonyas1 canyons within 20 km
Cascadyas1 waterfalls within 15 kmFigures from the sister sites' databases (Wikidata, HydroATLAS, GeoNames, OpenStreetMap, GBIF). Links open when each site is online.
Photographs
The view, as people saw it.
Other viewpoints nearby.
Perret tower (Grenoble)
France
- 57Viewyas Score
- 65 kmFarthest ridge
- 81Peaks in view
- 215 mAltitude
Lances de Malissard
France · 21 km
- 78Viewyas Score
- 209 kmFarthest ridge
- 549Peaks in view
- 1,978 mAltitude
Croix des Têtes
France · 56 km
- 68Viewyas Score
- 102 kmFarthest ridge
- 202Peaks in view
- 2,415 mAltitude
Mont Ventoux
France · 119 km
- 86Viewyas Score
- 239 kmFarthest ridge
- 525Peaks in view
- 1,893 mAltitude
Where these figures come from
| Name and type | Wikidata (Q2446035) · 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, Forestyas, Darkskyas, Canyonyas, Cavernyas, Cascadyas, Riveryas |
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.
beaches
Find your beach: sea temperature, sun and swimming month by month.Visit 
lakes
Every lake on Earth: water temperature, ice, depth and the shore.Visit mountains
Every summit in 3D: summit weather, the 0 °C line, huts and trails.Visit waterfalls
Every waterfall: height, flow month by month and when it roars.Visit 
islands
Every island from the sea up: size, sea temperature, ferries and 3D.Visit 
rivers
Every river from source to sea: the journey, the flow and the basin in numbers.Visit canyons
Every canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Visit 
caves
Every cave with its real depth and length: the rock above, the temperature inside all year, and how to visit.Visit 
dark skies
Where the night is still dark: the sky of every place, the Milky Way month by month, the Moon, eclipses and auroras.Visit 
viewpoints
Every viewpoint with its real 360° panorama: the peaks you can name, how far you see and where the sun sets.You are here
birdwatching
Every bird sanctuary and wetland with the species recorded month by month: who is resident, who comes for the summer, who only passes through.Visit forests
Every forest with its land-cover rings, what grows and lives in it, and the best months to walk it.Visit