RoutesPlannerFeaturesUpdates
App
Login or Signup
Get the App
Login or Signup
Discover
Places to see
France
Ile-de-France
Palaiseau
Boullay-Les-Troux

A dungeon in the middle of the woods?

Highlight • Monument

A dungeon in the middle of the woods?

Cycling

4.5

(43)

Mountain biking

5.0

(1)

This Highlight is in a protected area

Please check local regulations for:

Parc naturel régional de la Haute Vallée de Chevreuse

SaveShare
  • More
  • Location: Boullay-Les-Troux, Palaiseau, Ile-de-France, France

    SaveShare
  • More
  • Take Me There

    Tips

    June 14, 2021

    Cycling

    I would not like to burst the bubble of the medieval dream, but for information, this tower is a construction of studies of the CEBTP of the Domain of St Paul, which was used to make tests on the concrete structures but also in plumbing in particular the runoff of sewage such as those from toilets ... Sorry for the reality check; No Jouvencelles to issue.
    Translated by•

    May 1, 2025

    Cycling

    For more information on this experimental tower, go here: domainestpaul.fr/histoire-laboratoire-fluides-lvf
    Translated by•

    August 15, 2026

    Cycling

    Thanks for the info! I thought it was a control tower for the old railway line. Since there was only one track, this tower was used to ensure that two trains in opposite directions did not use it.
    Showing Translation•
    guide_signup

    In the know? Log-in to add a tip for other adventurers!

    Sign up for free

    Nearby routes

    Best routes near A dungeon in the middle of the woods?

    placeholder

    4.8

    (15)

    39

    riders

    #1.

    Choisel Church – Path in Chevreuse loop from Boullay-les-Troux

    16.9km

    01:08

    140m

    140m

    Easy bike ride. Mostly paved surfaces.

    Navigate with deviceSend to Phone
    Easy
    placeholder
    Easy
    placeholder

    Hard bike ride. Good fitness required. You may need to push your bike for some segments of this route.

    Hard

    Details

    Informations

    Elevation 120 m

    Weather

    Powered by Foreca

    Wednesday 28 October

    15°C

    3°C

    0 %

    Additional weather tips

    Max wind speed: 10.0 km/h

    Most visited during

    January

    February

    March

    April

    May

    June

    July

    August

    September

    October

    November

    December

    Location: Boullay-Les-Troux, Palaiseau, Ile-de-France, France

    Other Popular Places to Check Out

    Château de la Madeleine

    Explore
    RoutesRoute plannerFeaturesRedeem a voucherHikesMTB TrailsRoad cycling routesBikepackingSitemap
    Download the app
    Follow Us on Socials

    © komoot GmbH

    Privacy Policy