What is the man made structure (apart from the Great wall of China) on earth that is visible from space?

28 votes
Leaning Tower of Pisa
 
14% / 4 votes
Taj Mahal
 
25% / 7 votes
Eiffel Tower
 
7% / 2 votes
Chichen-Itza
 
11% / 3 votes
Beaver Dam
 
43% / 12 votes


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