Seven wonders of the medieval world

This are the Seven wonders of the medieval world.

1. The Colosseum of Rome
2. The Great Wall of China
3. The Porcelain Tower of Nanking, Cahina
4. The Mosque at St.Sophia (Constantinople)
5. The Stonehenge of England
6. The Catacombs of Alexandria
7. The Leaning Tower of Pisa

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