2. Keroman Submarine Base
Despite most of Lorient being flattened during the Allied bombing raids in the Second World War, this gargantuan Nazi submarine base survived almost unharmed and couldn’t be taken until the war ended.
It was later re-used by the French Navy until being turned into a visitor attraction by the city.
For two hours you’ll get a well-informed tour of K3, the largest of the blocks, measuring 170 metres in length by 20 metres in height.
The guide will show you around the individual pens, explain how the facility was constructed and recount the history of the U-Boats in Lorient.