This 2,000-year-old city, where the Teutonic Order founded one of its first commanderies in the 13th century, lies on the convergence of the Moselle and Rhine Rivers.

Situated on the north coast of the Snæfellsnes peninsula between a mountain range and the sea is the small town of Grundarfjordur, Iceland. Though certainly now the most well-known town on the peninsula, its nearby mountain Kirkjufell ("church mountain" in Icelandic) is perhaps Iceland's most famous.

Sigiriya, in central Sri Lanka, is an ancient rock fortress and one of the country’s most iconic archaeological sites. Rising nearly 200 meters from the surrounding plains, the massive granite column is crowned by the ruins of a royal palace built in the 5th century CE by King Kasyapa.

Perugia, the capital of Italy’s Umbria region, is a city built across hills and centuries. Originally settled by the Etruscans more than 2,500 years ago, it still holds remnants of their civilization, including one of the largest surviving Etruscan arches in Italy named Arco Etrusco, which greets visitors at the city’s entrance. Walking through the narrow streets of the historic center reveals layers of Roman, medieval, and Renaissance architecture, all woven together within ancient stone walls.

A true gem on the Caribbean coast, the port city of Cartagena (Cartagena de Indias) welcomes visitors with its charming old town, colonial buildings, and exceptional beaches. A popular cruise ship stop, many seafarers find themselves honorary Cartagenans, as they stroll shady, cobblestone lanes and gaze upon impressive churches.