A fortified town on the Adriatic coast, Kotor sits nestled in the Bay of Kotor, a natural fjord characterized by ancient ruins, winding streets and more charm than one can ask for.

Dambulla is located in central Sri Lanka and the closest town to the Ancient City of Sigiriya. It's known for Sigiriya Rock Fortress and the largest and best preserved cave temple complex in Sri Lanka, Dambulla Cave Temple, both of which visitors climb.

At almost 8,000 feet above sea level, Machu Picchu is an Incan citadel high in the Andes Mountains in Peru. Set above the Urubamba River valley, the site was built in the 15th century and later abandoned. Even today, it carries an air of mystery with its exact purpose still debated.

Known since the colonial era as Cartagena de Indias, Cartagena is made up of a charming walled Old Town, founded in the 16th century, with squares, parks, cobblestone streets and colorful colonial buildings. The tropical climate also gives way to spending days at the beach but the best are only accessible by boat.