Nice bathes the Riviera in soft light — pastel façades, pebbled shores and a leisurely pace. Sunset walks on the Promenade des Anglais reveal cafés, performers and locals by the sea. Museums like Musée Matisse and Musée d’Art Moderne add quiet culture; the old town’s lanes hide markets, Provençal flavors and courtyards. Nice blends Mediterranean leisure, refined art and everyday charm.

A fortified town on the Adriatic coast of Montenegro, 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.

"Pearl of the Adriatic," Dubrovnik sits in southern Dalmatia along the Adriatic Sea and is known for its unique Old Town, enclosed with massive stone walls from the 16th century and packed full of delicious seafood restaurants and charming boutiques.

Established in 1521 by the Spanish, Old San Juan is the oldest city in the United States and its territories. There you'll find colonial architecture, impressive fortifications, cobblestone streets, open plazas, and hidden patios. Nearby, el Yunque National Forest is the sole tropical rain forest in the U.S.