Fort du Trou d'Enfer

Fort du Trou d'Enfer
Route de Saint-Cyr (D7)
L'entrée se situe avant le pont à gauche en venant de Marly-le-Roi, à droite après le pont en venant de Bailly.
78160 Marly-le-Roi

01 30 87 20 51

Hidden in the heart of the forest at Marly-le-Roi, this unusual site is just one of a network of forts in Ile-de-France. It was built between 1878 and 1881 to house a garrison of 800 men.

Location

Openings

All year round, every Monday, Tuesday, Wednesday, Thursday and Friday.

Prices

€180/group.

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