*** (22/04/2017 14:11)
Une tranche de l histoire qui nous est livrée. Une incroyable infrastructure. Un guide passionné transmettant aux petits et grands sa connaissance du lieu. Il n'y avait pas que des chars pendant la seconde GM.

*** (25/06/2016 21:40)
Well worth a visit. Huge sub pens. One million cubic meters of concrete.

*** (22/10/2015 04:43)
A most informative visit through the former Keroman submarine base, originally built by the Germans during the second world war. The sub pens are impressive to see and in good condition, considering their age. The tour was in French, though they might do other languages for groups. Combine the tour with a visit to the French submarine Flore which is on display at the base.

*** (26/07/2016 21:09)
Really informative and interesting visit. The cost is around €5.50/adult. We saw the escape practice museum, the submarine Flore, and K3 for €35 for two. Our tour was in English and lots of fun! We spent over 3 hours here just learning. Not recommended if stairs are a problem for you.

(Those who visited the diving museum did not have an enjoyable experience however)

*** (31/08/2017 00:52)
Fantastic place with not very good history. Guide was deep in the subject. As a scale uboats modeller it was a "have to visit" :) highly recommended!!!

*** (05/08/2017 18:10)
Very interesting tour of this old base. The mass of the construction and explanations are impressive.

*** (02/08/2017 19:05)
Historic site, must visit! You can buy serveral types of tickets (museum, K3 visit, harbor) and this is very unclear which to buy, the organization must improve this flaw.

*** (30/08/2016 04:14)
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*** (25/08/2017 14:28)
The K3 tour was excellent - knowledgeable and engaging tour guide, fascinating engineering constructions and history (overlayed with current commercial enterprises - bizarre!)
Fabulous views of the surrounding area from the gun emplacements. Original wartime buildings and equipment to see.