Parc aux Étoiles

Less than an hour from Paris, in the Yvelines, the Parc aux Étoiles invites visitors of all ages to look up at the sky. Located in Triel-sur-Seine, this unique venue dedicated to astronomy and space exploration offers a true scientific escape for curious minds.

A unique place dedicated to the universe

Set in the grounds of the Château de la Tour, the Parc aux Étoiles is a scientific culture centre devoted to astronomy and astrophysics. From the moment you arrive, you are immersed in a museum space that retraces the history of the universe, from its origins to contemporary space exploration.
During the guided tour, you discover constellations, galaxies and celestial phenomena through interactive displays and three-dimensional models. Some installations immerse visitors in a black-light atmosphere, recreating the vastness of the cosmos and showcasing thousands of stars.

The route also leads to a gallery dedicated to astronautics, where more than sixty years of space conquest are presented in an educational way. Outdoors, the site is home to one of the largest astronomical refracting telescopes accessible to the public in France, making it possible to observe the Sun during the day or planets such as Jupiter and Saturn during night-time observation sessions.

Scientific activities

The Parc aux Étoiles offers a wide range of activities suitable for all ages. Guided tours allow visitors to explore the museum space alongside scientific mediators, who make complex concepts accessible and engaging.

Throughout the year, scientific workshops are offered for children and teenagers, giving them the chance to learn about astronomy, understand how telescopes work, or even build their own rocket through fun and educational activities.

The site also hosts conferences and major events linked to scientific news. Highlights include skywatching evenings, which offer the chance to admire the stars in ideal conditions, while events such as les Nuits des Étoiles and temporary exhibitions combine science and discovery.
An ideal family outing to learn while having fun — and leave with stars in your eyes!