Where: Isfahan, Iran, on the Zayandeh River.
Stats: 344 feet long; 45 feet wide; 23 arches.
Awe Factors: Besides its stunning stone foundation, brightly colored tile work on its exterior, and original 17th-century paintings on its interior, this bridge is noteworthy because it serves three functions—as a passageway, a weir, and a recreation place. The bilevel structure, originally built as a dam in 1650, houses a covered indoor area upstairs where people gather to drink tea and socialize in the cool shade. And the echoing acoustics inside make it a popular spot for local singers and folk musicians, who gather there to perform on Friday nights.