Circuit GR(R)8 de St-Michel-Chef-Chef aux Moutiers-en-Retz
SAINT-MICHEL-CHEF-CHEF
Walk along the seaside, towards Les Moutiers-en-Retz, take the Sainte-Anne promenade then you will arrive at Port Royal.
From the car park, leave the castle on your left and go down the stairs. Cross the road and go between the two walls.