Highlight • Monument
Saint-Barthélemy Astronomical Observatory (Lignan)
Recommended for
Hiking
by 15 explorers
Tips
Damiano 🇮🇹
July 3, 2025
Hiking
The Saint-Barthélemy Astronomical Observatory, located in the charming village of Lignan at over 1,600 meters above sea level, is a true gem for stargazers and science enthusiasts.
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.
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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Routes here
Best routes to Saint-Barthélemy Astronomical Observatory (Lignan)
5.0
(3)
32
hikers
Alpine meadow hike from a UNESCO dark-sky observatory to a historic 1661 mountain sanctuary.
Moderate
4.5
(2)
14
hikers
11.2km
04:45
860m
860m
Trail through UNESCO dark skies to Europe's highest sanctuary amid Monte Rosa views.
Moderate
5
hikers
16.1km
06:54
1,140m
1,140m
Alpine climb from an astronomical observatory to Col Vessonaz with sweeping Aosta Valley views.
Hard
Details
Informations
Elevation 1,630 m
Weather
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Thursday 12 February
1°C
-5°C
19 %
Additional weather tips
Max wind speed: 5.0 km/h
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