Hydrophone

The Hydrophone is a music venue at Lorient La Base located in a refurbished World War II blockhouse. The facility contains two concert halls with capacities of 500 and 200 people, plus five rehearsal studios for creative work.

The building was originally constructed as a blockhouse during World War II within a naval base and was later converted into a cultural venue. The conversion preserved the raw structure and military elements like reinforced concrete walls as essential features of the space.

The venue functions as the main center for contemporary music in southern Brittany and shapes the artistic life of the region. Musicians and audiences gather here to experience concerts and festivals like IndisciplinéEs, which brings together artists from different genres.

The venue is divided into two areas, one for concert performances and one for studio work, with separate entrances for different activities. Opening hours typically run from Tuesday to Friday, so check schedules in advance when planning a visit.

The venue sits within Nefs 5 and 6 of the former submarine base and stands directly next to the warship Flore. This placement alongside historical military vessels makes the context of a visit unusual and historically resonant.

GPS coordinates: 47.73111,-3.37278

Latest update: December 14, 2025 18:47