Triel-Sur-Seine: Holiday apartments and holiday homes

On the heights of Triel-sur-Seine, the Parc aux Étoiles is located in the grounds of the Château de la Tour. It is a centre for scientific, technical and industrial culture and is primarily dedicated to astronomy.

A holiday apartment in Triel-sur-Seine can be found specifically for travel planning.

The Parc aux Étoiles offers exhibitions, educational workshops, observation evenings, lectures and programmes for school groups. The centre can be reached on Transilien line J to Triel-sur-Seine station, followed by bus line 25 from the station.

Culture

The Parcours historique offers an approximately two-hour walk to discover the heritage of Triel-sur-Seine. The townscape also includes the choir of the Église Saint-Martin, which spans the Rue Galande.

At the municipal Théâtre Octave Mirbeau, the local theatre troupe Comédiens de la Tour regularly performs plays. The Chapelle Sainte-Anne is the only surviving remnant of the hospital buildings that stood successively on this site. Its Romanesque capitals are a very rare example of Romanesque art in Île-de-France.

The Pont suspendu de Triel road bridge was inaugurated and opened in 1956.

The 47th edition of Triel's annual large-scale brocante, the Fête du Flan, will take place on 26 and 27 September 2026 along the Seine quays.

Nature

Parc Senet on the banks of the Seine is a popular place among walkers and families. Triel Rando Nature offers walks and the opportunity for everyone to discover the natural and architectural heritage.

Geographical setting

In the vicinity of Triel-sur-Seine are the Château de Pontoise, a castle, and the ruins of the Abbaye Notre-Dame d'Abbecourt (Orgeval, Yvelines).

In the wider regional area around Triel-sur-Seine are the Château de Saint-Cloud, a castle, and Bernardines d'Argenteuil (Priory), a historic site. Also located there are the natural arch Arche de la Défense, the Île Saint-Louis island, Parc de la Villette, a park, and Parc Montsouris, also a park.

More local pages: Maurepas, Le Mesnil-Saint-Denis, Garancières, Boissets, Auffargis, Bennecourt, Prunay-En-Yvelines, Mareil-Marly.

For the higher-level travel overview: Yvelines.