"Croatia is at a crossroads. In July, the country will become a member of the European Union, a move that will help finance more tourism infrastructure. That will be great for foreign visitors looking for an easier vacation experience, but less great for budget travelers willing to trade some legwork for low prices. Since Croatia won't be adopting the euro immediately, travelers won't yet be subject to the upward adjustment that seems to come with becoming a eurozone country. And visitors looking to add Croatia to a larger European itinerary can save with Eurail's Global Pass Free Days Promotion, which tacks on additional free days to 15-day, 21-day, and month-long train passes purchased by March 29."

08. Sri Lanka

"Panama's great canal-expansion project will be complete next year, at which point it will be able to welcome more giant cruise ships and many more visitors. And with so much to offer, from incredible wildlife to pristine beaches, it's easy to see why the country's popularity is set to soar. For now, though, reasonable prices reign—grab a traditional meal for under $5 or live it up in a luxury hotel for under $120. Best of all for the currency-conversion-challenged, the standard currency is U.S. dollars, so you'll always know exactly how much you're spending."

10. Nicaragua



"Nicaragua is poised to become the next Central American destination to gain serious popularity. More political stability, incredible ancient ruins, lush jungles, fabulous beaches, and unbeatable prices will likely start drawing bigger crowds in the coming years. And with great popularity comes swelling prices. For now, though, it's not just the basics that are affordable: If you want to go grand, you can do it for less, too. Think luxury hotels for the cost of a New York City motel.