# Fort de Bertheaume

Plougonvelin, Finistère, Bretagne

Fort de Bertheaume stands in Plougonvelin (Finistère), in the Bretagne region of France. Adult admission costs 5 EUR. The building opens only occasionally, for events.

The fort of Bertheaume stands on a rocky islet in the commune of Plougonvelin, linked to the mainland by a footbridge and reachable at low tide. Built on Vauban's orders at the end of the 17th century to watch over the entrance to Brest harbour, it still holds barracks, powder stores and gun batteries from the 18th and 19th centuries. Left derelict after the Second World War and bought by the commune in 1990, the site now combines military remains with an open-air theatre and outdoor activities such as via ferrata.

**Opens occasionally**

The fort is currently closed and can only be visited in July and August, every day, as well as during Heritage Days. It is not wheelchair accessible and dogs are allowed on leash.

_Source: Office de Tourisme Iroise Bretagne, courriel du 9 septembre 2026_

## Opening hours

- Monday : 10:30-18:00
- Tuesday : 10:30-18:00
- Wednesday : 10:30-18:00
- Thursday : 10:30-18:00
- Friday : 10:30-18:00
- Saturday : 10:30-18:00
- Sunday : 10:30-18:00

## Prices

- Adult : 5 EUR
- Child : 2.5 EUR
- Free for Gratuit moins de 5 ans

## Practical information

- Visit duration : 90 min
- Wheelchair access : Not accessible
- Dogs : Allowed on a lead
- Child-friendly : yes

## Where this château is

- Rue de Bertheaume, 29217 Plougonvelin
- +33 2 98 38 03 81
- 48.33694444, -4.6975
- Heritage status : Protection status unknown

## Sources

- Official website : https://www.fort-de-bertheaume.bzh/
- Wikidata : https://www.wikidata.org/wiki/Q541130

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- fr : https://chateaupedia.com/fr/chateau/fort-de-bertheaume
- en : https://chateaupedia.com/en/castle/fort-de-bertheaume
- de : https://chateaupedia.com/de/schloss/fort-de-bertheaume

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