1. Historic Centre of Florence

 

2. Historic Centre of Avignon: Papal Palace, Episcopal Ensemble and Avignon Bridge

 

3. Paris, Banks of the Seine

 

4. Notre Dame

 

5. Aachen Cathedral

 

6. Burgos Cathedral

 

7. Chartres Cathedral

 

8. Cologne Cathedral

 

9. Kiev: Saint-Sophia Cathedral and Related Monastic Buildings, Kiev-Pechersk Lavra

 

10. Speyer Cathedral

 

Source