The Bataclan is a "salle de spectacle" at 50 boulevard Voltaire in the 11th arrondissement of Paris. It was built in 1864 by the architect Charles Duval. Its name refers to Ba-Ta-Clan, an operetta by Offenbach, but is also wordplay on the expression le tout bataclan (the whole caboodle; oldest written source is a journal entry of 11 Nov 1761 by Favart, predating Offenbach).