Dominica, known as the “Nature Island of the Caribbean,” is a haven for eco-tourists and adventure seekers. Nestled between the French islands of Guadeloupe and Martinique, this lush island boasts a remarkable landscape of volcanic mountains, dense rainforests, and stunning waterfalls. Dominica’s most iconic natural wonder is the Boiling Lake, the second-largest hot spring in the world.

Evidence of our nation's birth abounds in Boston, a hub of revolution that is essentially the oldest city in the United States. Visitors are compelled to walk the 2.5-mile Freedom Trail around the city center, and bear witness to 16 historical locations related to the history of America.

Whether exploring ancient ruins or strolling through its modern city center, visitors will find plenty to discover in Nijmegen, the oldest city in the Netherlands.

There's more than meets the eye in Savona, a Northwest Italy port city many cruise ship passengers are lucky enough to find themselves in. The giant Fortezza del Priamàr looms over the water, providing a unique welcome. Be sure to stroll through the city's genteel, impressive medieval center, visit the beautiful Savona Cathedral and see marvelous artistic works from centuries past at the Ceramics Museum.

Located in Greece's Lesser Cyclades, Naxos is an island in the South Aegean Sea and popular for its spectacular beaches. A favorite tourist destination, Naxos is home to a variety of ancient ruins, including the Temple of Apollo - Grotta, the Temple of Demeter, and Apano Kastro.