Honorable mention and the 8th Wonder of the World:
The Great Pyramid of Egypt
Gza, Cairo, Egypt
Largely assumed to be a Wonder of the World, the pyramids outside Cairo go back thousands of years and are a marvel of architecture, consisting of 2,300,000 blocks of solid stone weighing anywhere from 2-30 tons all the way up to 70 tons! The Pyramids didn't make the list of 7 man made Wonders of the World because it was already included on the list of 7 Natural Wonders of the World, so it's widely include with an honorable mention on this list.