I am really impressed with the following man made wonders of this world. Impossible is possible. The wonder images and captions were just copied form CNN link.
|The Aqueduct, one of the Iberian Peninsula's best preserved ancient monuments, features 44 double arches (or 88 when counted individually) and 79 single arches -- a total of 167. It was built during the reign of Roman Emperor Trajan and is still in use today, carrying water from the Frío river to the town of Segovia. The bridge, which consists of 24,000 granite blocks, was constructed without the use of mortar and each of its 167 arches is more than nine meters high. Completion date: AD 50.|
|The Burj Khalifa has a height of 828 meters and is both the tallest building in the world and the tallest free-standing structure in the world. Engineers faced multiple challenges, including the strong winds that batter the tower. Because of this, over 40 wind tunnel tests were conducted, not just to determine how the wind would affect the building but also to test the cranes used to construct it. Completion date: January 4, 2010.|