The Four Lifts on the Canal du Centre and their Environs, La Louvière and Le Roeulx (Hainault)
ラ・ルヴィエールとル・ルー（エノー）の中央運河の４つの閘門とその周辺環境
The Four Lifts on the Canal du Centre and their Environs, La Louvière and Le Roeulx (Hainault)
The Four Lifts on the Canal du Centre and their Environs, La Louvière and Le Roeulx (Hainault)