This autumn’s fall of part of the walls of Montreuil-sur-Mer (Pas-de-Calais) surprised everyone. Bad weather triggered these collapses and weakened other parts of the historic monument. Montreuil-sur-Mer (Pas-de-Calais), report Usually a city of history and glamour, known for its medieval alleys in their juice, gourmet restaurants, citadel and fabled walls – today mostly inhabited by bats – Montreuil-sur -Mer makes headlines (.. .)