http://www.greeneratravel.com/ Green Era Travel - Cambodia Tour Operator Kintai bridge, Iwakuni, Japan
A walk across a floating boat bridge on the Buriganga river in Dhaka. Water hyacinth has hampered the movement of boats on the river so boats are tied together to form a temporary bridge. (by Munir Uz Zaman)
Not sure I'd have the nerve to go through with it, but would love to try...
Daikon-jima bridge, Matsue, Japan
Hoover Dam- a trip to Vegas can educational as well you know