The interior of Koln Cathedral in Germany. My grandparents met in lost war Koln. I remember them telling me that most of the city had been destroyed by the allied bombing raids but that the cathedral stood unscathed.
Gloucester Cathedral or the Cathedral Church of St. Peter and the Holy and Indivisible Trinity, Gloucester, England Gloucester Cathedral cloister, used extensively in the Harry Potter film series, England (by shexbeer).
Marburg~Its status as an unspoilt, spire-dominated, castle-crowned Gothic/Renaissance city on a hill, intact because Marburg was isolated between 1600 and Marburg established one of the first pedestrian zones~Germany