La Conciergerie Paris, France
A rare medieval survival in the heart of Paris, the early 14th-century Conciergerie is part of a royal palace but is best known for its use as a prison during the Reign of Terror.
A rare medieval survival in the heart of Paris, the early 14th-century Conciergerie is part of a royal palace but is best known for its use as a prison during the Reign of Terror.