former marlstone factory from the early 20h century in maastricht

100 20h 20th architecture area autumn being blue bridge building cement century chimney city cityscape closed clouds coast company concrete construction converted down dramatic early enci environment europe factory famous former heidelbergcement industrial industry landmark landscape maastricht marlstone metal meuse nature natuurmonumenten outdoor oven pietersberg product quarry recenyly recreational river sea shut sint sky structure summer sunset travel tree urban view water which years