Hello! I'm Outgoing.I help make life more interesting.
Hello! I'm Outgoing.I help make life more interesting.




Step inside a colossal WWII U-boat fortress before its transformation. Guided tours and exhibitions reveal the poignant history of this massive concrete relic that still dominates the waterfront.
WWII U-boat base
Historic fortress
Guided tours available
Industrial architecture
Tips
🏗️climb to the roof for the full scale
⚓French submarine tour right across the way
🚂regional train from Nantes makes it easy
Journées européennes du patrimoine
Ville Port




Step inside a colossal WWII U-boat fortress before its transformation. Guided tours and exhibitions reveal the poignant history of this massive concrete relic that still dominates the waterfront.
WWII U-boat base
Historic fortress
Guided tours available
Industrial architecture
Tips
🏗️climb to the roof for the full scale
⚓French submarine tour right across the way
🚂regional train from Nantes makes it easy
Make it an outing
Add nearby spots before or after your event