No. 4 Worst Currency: Vietnam

Vietnam
$1 UDS = 16,975.00 Dong

The Vietnamese currency is called the dong.

Americans have a complicated history when it comes to Vietnam, but the still-communist country has a blossoming tourism industry, and visitors are usually asked to pay for everything with dollars, which trade at a dong rate of 16,975 to $1.

• Click here to see No. 3: Turkmenistan.