Where Am I?

1. If erected as intended, this structure would have stood 137 feet tall and weighed 1,168 tons.
2. Quarrymen are thought to have abandoned this project 3,500 years ago when cracks were found in its sides.
3. The granite quarry has a canal that may have connected to the Nile and allowed the structure to float to its final destination.
4. The object offers clues about the stoneworking techniques of ancient people.

ANSWER: The Unfinished Obelisk at Aswan, Egypt