Highlight • Monument
Saint-Barthélemy Astronomical Observatory (Lignan)
Hiking
5.0
(18)
Road cycling
5.0
(1)
Tips
July 3, 2025
Hiking
Here, in the mountains of the Aosta Valley, you can explore the universe thanks to cutting-edge instruments and guided tours that bring adults and children closer to the mysteries of the sky. The pristine natural setting and UNESCO recognition for the protection of the night sky make the experience even more magical, transforming every observation into a moment of wonder and discovery.
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Nearby routes
Best routes near Saint-Barthélemy Astronomical Observatory (Lignan)
5.0
(4)
41
hikers
Alpine meadow hike from a UNESCO dark-sky observatory to a historic 1661 mountain sanctuary.
4.5
(2)
13
hikers
11.2km
04:45
860m
860m
Trail through UNESCO dark skies to Europe's highest sanctuary amid Monte Rosa views.
6
hikers
16.1km
06:54
1,140m
1,140m
Alpine climb from an astronomical observatory to Col Vessonaz with sweeping Aosta Valley views.
Details
Informations
Elevation 1,630 m
Weather
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Saturday 12 September
18°C
9°C
0 %
Additional weather tips
Max wind speed: 7.0 km/h
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