Indonesia
$1 USD = 11,198.40 Rupiah

The largest Muslim nation in the world also has one of the least-valuable currencies in the world. It takes 11,198.40 Indonesian rupiah to buy a single U.S. dollar.

Its capital city — Jakarta — is the largest city in Southeast Asia with a population of 8.5 million, about the same as New York City. Indonesia is also home to Bali, a tropical tourist paradise that was targeted by terrorists who bombed a nightclub in 2002.

• Click here to see No. 5: Sao Tome and Principe.