$1 USD = 5,115.00
The African nation of Guinea — near Guinea-Bissau and nowhere near Papua New Guinea — has the ninth-worst currency in the world, with 5,115 of its francs getting you a single U.S. dollar.
Its natural resources include the aluminum ore bauxite, diamonds and gold, and the country's soccer team has never made it to the World Cup.
• Click here to see No. 8: Laos.