Horloge Astronomique
About
The Strasbourg Astronomical Clock, situated in the right transept of the Cathédrale Notre‑Dame de Strasbourg, is a celebrated masterpiece of 19th‑century horology and a cornerstone of the city’s cultural identity. Designed and built in 1843 by Jean‑Baptiste Schwilgué, the clock succeeded two earlier medieval devices and incorporated the latest mechanical innovations of its day. At the heart of the clock’s brilliance lies a perpetual calendar that automatically displays the day, month, year, and lunar phases, as well as an intricate orrery that shows the positions of the sun and moon. Every day at solar noon, a procession of life‑size figures—Christ, the Apostles, and an 18‑inch rooster—move rhythmically across the face of the clock, the rooster crowing thrice at 12:30. Visitors appreciate the harmonious blend of engineering precision and artistic detail. The automata, the eclipses display, and the melodic carillon that accompanies the procession all contribute to a uniquely immersive experience. The clock is free to view, and the cathedral interior offers free admission, making it accessible to a wide audience. An ideal visit lasts about two hours, allowing time to observe the clock’s daily cycle and explore the cathedral’s surrounding galleries.
Highlights
- Perpetual Calendar
- Planetary Dial
- Daily Procession of Figures
Must-See Areas
Good to Know
Good for
Best time to visit
The best times to visit are in late winter to early spring or late autumn, when the city is less crowded and the light through the cathedral’s stained‑glass windows is particularly beautiful.
At a glance
- Typical visit: about 2 hours