サン・マルタン・ラ・ガレンヌのおすすめランニングルート

A very beautiful Romanesque church

Superb view between Vétheuil and La Roche-Guyon

Nice and varied walk: forests, fields, lake! The best

Just unmissable! Impossible to be disappointed!

Please note, in order to protect endangered wildlife, access to the chalk peaks in the commune of Haute-Isle is prohibited every year from March 1 to June 30 by prefectural decree. The paths to mass in Chantemesle are therefore cut off. Furthermore, following a collapse the previous summer, the Piton du Colombier is prohibited at all times for obvious safety reasons.

For information, following the collapses that occurred last summer, the dovecote peak is no longer accessible to the public for safety reasons.

Can we freely access the dungeon or do we have to go through the castle?

It is a medieval tower built in the 12th century to defend the castle and the river crossing. It is connected to the castle by a tunnel dug in the rock. The keep is 30 meters high and has four floors. It offers a panoramic view of the Seine valley and the Vexin regional natural park. You can visit the dungeon by climbing a staircase of 300 steps, or by taking an elevator installed in 2007. The dungeon is open to the public from April to November, from 10 a.m. to 6 p.m. It's a great place to enjoy a bit of history and adventure.