'Gate of Hell') is a pair of tollhouses in Paris that once served as a gate through the Wall of the Farmers-General (Mur des Fermiers généraux) at the current location of the Place Denfert-Rochereau.

[1] According to Michel Roblin, the name may be derived from the nickname en fer ("of iron") given to a door on the Wall of Philip II Augustus.

[2][3] The two neo-classical pavilions that make up the Barrière were built in 1787 by the architect Claude Nicolas Ledoux, both of which exist still.

[citation needed] The third act of the opera La Bohème by Giacomo Puccini portrays Mimi approaching the Barrière d'Enfer from the Paris side to visit a tavern.

In commemoration of this, a portion of the Place Denfert-Rochereau between the two buildings was renamed avenue du Colonel-Henri-Rol-Tanguy on the 15th of March 2004,[6] on the sixtieth anniversary of the Liberation of Paris.