Barranquilla sits near the mouth of the Magdalena River on Columbia's Caribbean side. It is a major seaport and a center of commerce, but everyone breaks loose for four days in February for one of the liveliest carnivals outside of Rio.

This historic port town is located on the Gulf of Nicoya in Costa Rica. Don't miss the seafood cafes along Paseo de los Turistas promenade.

Located on the banks of the Danube, Spitz an der Donau is a charming market town in Austria's Wachau valley. Occupied since Celtic times, Spitz offers spectacular views of the Danube valley.

Londonderry, often called Derry, is a city steeped in history and charm, uniquely surrounded by remarkably well-preserved 17th-century walls. In fact, it holds the title of being the only completely walled city in all of Ireland. Strolling along these ancient ramparts offers visitors not only a glimpse into the past but also breathtaking panoramic views of the winding River Foyle and the lively streets below.

A small island only 100 miles in length and 20 miles in width, South Georgia's only inhabitants are herds of reindeer, penguins, seals, and about 20 scientists who maintain the British Antarctic Survey station on the island. It lies about 800 miles east of the Falkland Islands, and is owned by the British.