3. Khaju Bridge, Iran
Iran’s Khaju Bridge was 17th century’s architectural Swiss Army knife. First opened in 1650 by Persian Safavid king, Shah Abbas II, the splendid Khaju Bridge served as a makeshift dam as well as a popular public meeting place in addition to, you know, going over the water. A popular teahouse once sat on the bridge, complete with a pavilion in the center with a seat for the king.