We look forward to seeing you on the Pentecost weekend of May 23–25, before opening 7 days a week starting on May 30, 2026 (through November 1).
Planetarium & Observatory
An immersive planetarium
Daily showings at 10:30am, 11:30am, 1:30pm, 2:30pm and 3:30pm.
From July 4 to August 30, 2026, additional showings at 9:30am, 12:30pm and 4:30pm.
Join a guide on a journey through the Milky Way to discover the planets, constellations and the current night sky.
Planetarium (additional charge) : €8 per person.
Duration : 1 hour
Seats can be reserved online, when you purchase your admission ticket, or upon arrival at the summit, subject to availability.
In French only.
The observatory dome
Every day, from 9am to 5pm
Let yourself be drawn into the secrets of an astronomical observatory and discover a series of images captured by professional instruments.
Duration : 15 minutes
Free access during your visit to the summit.
