The Saint‑Blaise des Simples Chapel - Milly‑la‑Forêt 

The St‑Blaise's Chapel is closed from December 2nd 2018 to March 1st 2019 - Reopening at 2 pm.

Built in the 12th century in Milly-la-Forêt, it is the last witness of what used to be a lazaret.
Decorated by Jean Cocteau, for whom it also became his grave, it is surrounded by a botanical garden with a variety of medicinal plants.