Meudon Observatory

The Meudon Observatory was built between 1667 and 1672 under the direction of Claude Perrault, following orders from Jean-Baptiste Colbert. This historic building was carefully designed to align with the four cardinal directions, creating a symmetry that reflects its scientific purpose.

The Paris Meridian and Architectural Features

One of the most remarkable features of the observatory is that its central axis is crossed by the Paris meridian, a line set at 2° 20′ 14″ east of Greenwich. This alignment played an important role in mapping and astronomy during that era. The observatory’s orientation and structure were thoughtfully planned to support astronomical research and observation.

Access and Current Use

Today, the Meudon Observatory remains closed to the public. Its historic walls continue to house scientific activities, but visitors are not permitted to enter. The building stands as a reminder of the advances in astronomy and science from centuries past.