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Historic site and monument à Bourcefranc-le-Chapus

Fort Louvois


Port du Chapus
17560 Bourcefranc-le-Chapus

How do I get there?


At the foot of the Ile d'Oléron bridge, Fort Louvois is an unmissable site in the Marennes basin. Designed by Vauban, it is the little brother of Fort Boyard!

It is a 1691th century maritime fortification, built on a rock submerged at high tide, between the Ile d'Oléron and the Bassin de Marennes. Its construction, decided by Louvois, Minister of War for Louis XIV, was carried out from 1694 to XNUMX according to plans by Vauban.

The objective is to cross cannon fire with the Citadel of Oléron to defend the maritime arsenal of Rochefort. Designed in the shape of a horseshoe, with a central keep - protected by a drawbridge and a moat, it is reminiscent of the fortified castles of the Middle Ages.

It was classified as a historical monument in 1929.

Today, Fort Louvois opens its doors to you for an unusual and surprising visit!

At low tide: access on foot by a paved road of 400 meters (5 minutes on foot)
At high tide: access by boat, from the port of Chapus (10 minutes crossing. Rotations every 15 min. approximately)

Opening hours:
- April and October: open at low tide only
- Easter and All Saints holidays, May, June, September: open at low tide and/or at high tide
- July-August: open from 10:30 a.m. to 18:30 p.m. at low tide and at high tide

We speak English

On video

Location details

  • Sea view
  • Panoramic view


Opening hours from 08 April to 05 November 2023
Monday Open
Tuesday Open
Wednesday Open
Thursday Open
Friday Open
Saturday Open
Sunday Open
Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday: open accessible on foot at low tide and by boat at high tide (depending on the season).


Pricing Min. Max.
Reduced price
7.5 € -
8.5 € -

4.5 € -
Adult group
6.5 € 7 €
Children group
4 € -

Family pass (2 adults + 2 children): €24.00
Student rate: € 6

Free for less than 4 years.

Payment method

  • Bank / credit card
  • Cheque
  • Classic Holiday Vouchers
  • Cash



  • Toilets
  • Parking nearby


  • Tourist Documentation

Activities on site

  • Permanent exhibition

Home animals

Pets are not accepted.

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