The Iron Gates, a dramatic gorge along the Danube River, is a spectacular natural wonder straddling the border between Romania and Serbia. This striking geological formation carves its way through the Carpathian Mountains, creating breathtaking views that captivate all who visit.

Bar Harbor should be any traveler's Maine priority! Drink in a view of the Atlantic Ocean from the town pier, and be sure to get some lobster at one of the excellent local restaurants. Bar Harbor, a Mount Desert Island town, is also the portal to the rugged, recreational paradise Acadia National Park, where birding, whale-watching and kayaking is the order of the day. The park's Cadillac Mountain is the highest point on America's East Coast.

El Calafate, a small town in southern Patagonia, serves as the main gateway to one of Argentina’s most spectacular natural wonders, the Los Glaciares National Park. Sitting on the shores of Lake Argentino, El Calafate was once a quiet outpost known mainly for sheep farming and the hardy calafate berry. Today, it attracts travelers from around the world who come to witness massive ice formations and the shifting blue walls of nearby glaciers.

Whether cruising along its waters, exploring historic towns, or simply soaking in the scenic views, the Rhine River offers an experience that is as diverse as the countries it passes through.

Along the banks of the Moselle River, Cochem is a charming village known for Reichsburg castle as well as its old town, with its half-timbered houses.