Pics of this are also on the large screens at the gallery place metro..............

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   Great Wall of China  
3. The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of ... Wikipedia
5. Address: China
6. Construction started: 700 BC
7. Opened: 206 BC