Inaugurated in 1884, it is a centre for research into astrophysics and the measurement of time. Founded to support the local watchmaking industry, the observatory is still an internationally recognised centre for the production of time. Its buildings still house numerous scientific instruments, including its meridian telescope.
A visit that promises unique discoveries!
Dates
Opening periods
29 October at 3pm
26 November at 2.30pm 25/02/2026 14:30
25/03/2026 14:30
22/04/2026 15:00
Wed 02/25 : from 2:30 pm to 4:00 pm
Wed 03/25 : from 2:30 pm to 4:00 pm
Wed 04/22 : from 3:00 pm to 4:30 pm
Wed 03/25 : from 2:30 pm to 4:00 pm
Wed 04/22 : from 3:00 pm to 4:30 pm
Practical information
Activities
Cultural activities
Guided tours
Rates
| MINI | Max | Additional information | |
|---|---|---|---|
| Free of charge | 0 | Free: for disabled people, jobseekers and children under 12. | |
| Basic rate | 9 | until October | |
| Basic rate | 10 | from November | |
| Special rate | 6 | Reduced rate: Students, under-18s, member associations of the Tourist Office and Convention Bureau | |
| Special rate | 7 | (From November 2025) Reduced rate : Students, under-18s, member associations of the Tourist Office and Convention Bureau | |