1. St. Basil's Cathedral (Moscow, Russia)

2. Notre Dame (Paris, France)

3. St. Peter's Basilica (Rome, Italy)

4. The Duomo of Milan, Italy

5. St. John Divine Cathedral (New York, US)

6. Cologne Cathedral, Germany

7. Basillica di Santa Maria del Fiore (Florence, Italy)

8. The St. Paul Cathedral (London, UK)

9. St. Mark's Basilica (Venice, Italy)

10. Basilica di San Francesco (Assisi, Italy)