Challenge 9: the Morrison Hotel Mystery

The death of Jim Morrison is not the only mystery in the Rue Beautreillis. On this street where the leader of The Doors spent the last few months of his life and where he (probably) died, another door stands curiously alone. This large stone gateway is the last remaining element of the Hotel Raoul, a historic house in the Marais, but why was it preserved when the rest of the building was