From Caen, when you get to Cherbourg, take Equeurdreville.
“Carrefour” Hypermarket would be on your right and the train station on your left. Keep going straight for about 1,5 km.
After the tunnel, take the left lane and at the traffic light, turn left following the polyclinique direction.
At the next traffic light, around 500 meters after, turn right and then it will be the third street on the right again.
Keep driving until the end of the dead end, come in under the porch.
And there you are!