Ploërmel astronomical clock

The Ploërmel astronomical clock is housed in the motherhouse complex and displays the movements of celestial bodies throughout the entire year. It features ten separate dials that track different phenomena such as lunar phases, planetary positions, and solar movements.

Gabriel Morin constructed this mechanical clock in 1855 for the Couvent de la congrégation des frères de Ploërmel. The device has remained in operation since its completion and continues to function as originally intended.

The clock serves as an educational instrument within the Breton religious community, demonstrating the mathematical principles of astronomy through mechanical innovation.

The clock is located inside a religious building complex, so visitors should check access conditions and opening times before arriving. The building is relatively easy to locate as it sits in the town center.

Each of the ten dials operates independently to track different celestial phenomena, including lunar phases, planetary positions, and solar movements.

Location: Ploërmel

Inception: 1855

Creator: Gabriel Morin

GPS coordinates: 47.93140,-2.39960

Latest update: December 8, 2025 21:02