1 Great Pyramid. Giza, Egypt, 2504 B.C
2. Brooklyn Bridge, Brooklyn, New York 1883
3. Great Wall Of China, China, 475 B.C
4. Aqueduct Of Segovia, Segovia, Spain
5. Panama Canal, Panama, 1914
6. Hoover Dam, Colorado River, AZ, 1936
7. Golden Gate Bridge, San Francisco, CA,1937
8. English Channel Tunnel, Strait Of Dover, 1994
9. Burj Khalifa, Dubai, United Arab Emirates, 2010
10. Qingdao Haiwan Bridge, Qingdao, China, 2011.