This city, which started as a modest fishing village, now offers plenty of modern German charm. The extensive public transportation makes it a perfect home base for seeing nearby attractions such as Heidelberg. Mannheim is known for its many pretzel stands, so make sure you indulge in one of these delicious treats before you leave!

Almost every modern scene in Constanta, Romania, is juxtaposed against 4th century Roman relics.

One of the Caribbean's most lively islands, Guadeloupe will charm you with its impressive dormant volcano, stunning tropical forests, and French ambience. Actually composed of two islands, Grand Terre and Basse Terre, Guadeloupe has the honor of hosting one of France's seven Parcs National. Don't miss a chance to try Guadeloupe's famous Creole cuisine.

As you cruise along the Orinoco, South America's second-longest river, you will pass an imposing 17th-century fort. Just up the river is Ciudad Guayana, your gateway to Angel Falls. The falls, discovered 60 years ago by American bush pilot Jimmy Angel, are the hightest in the world. More than a half-mile hight and 15 times taller than Niagara Falls, they are undoubtedly one of the world's most breathtaking natural wonders.

This southern Mexican state borders Guatemala. Its mountainous highlands and dense rainforest are dotted with several Mayan archaeological sites and Spanish colonial towns.

The Columbia River Gorge, straddling the border between Oregon and Washington, is a stunning natural wonder renowned for its breathtaking landscapes and outdoor adventures. This dramatic canyon, carved by the Columbia River, is flanked by towering cliffs and lush forests.