Dinard is a French city near by the famous city of Saint-Malo.
There you have a walk near by the sea. And on it, at a moment, there is a little cave guarded by a metal fence.
On this place, you will be able to see, on the rock, a statue of Saint Mary.
And on a wall, you will see many « ex votos of gratitude (including mine…).
If you are looking for a place to pray, this one can be very good.
This link might help you to find her.
By the way, on Dinard there is a charming Anglican church. Feel free to pay a visit to it. The people there are adorable.