West window at the cathedral of Altenberg, NRW, Germany

1133 15th altenberg cistercian germany nrw north rhine rhine westphalia westphalia abbey arch arches architecture art arts basilica belief below building buildings cathedral cathedrals catholic century church churches civilization clourful colorful craft cross culture figure figures former german glass gothic groined historic historistic history huge indoor interior mediaeval medieval monastery pillar pillars pointed religion religions religious roman style trade tradition traditional vault west window windows