Caye Caulker lies off the coast of Belize, a small island that was once a quiet fishing village and today still feels wonderfully uncrowded compared to many Caribbean destinations. Its name likely comes from an English twist on “Hicaco,” the old Spanish name meaning coco plum, a nod to the island’s early days and bilingual roots.

Once the capital of the Mughal Empire, Agra, India is now a cultural capital replete with famous landmarks and striking architecture. The city’s most prominent draw is the magnificent Taj Mahal, the iconic white marble mausoleum and a UNESCO World Heritage Site visited by millions of people each year.

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.

Villahermosa, the capital of Tabasco, is a city where ancient civilizations, tropical landscapes, and modern life intersect. Known as the “gateway to the Mayan world,” the city sits on the banks of the Grijalva River and serves as a cultural hub for southeastern Mexico. One of its most unique attractions is Parque-Museo La Venta, an open-air museum that blends archaeology with a jungle setting.

Coursing through 10 countries, the Danube is the second-longest river in Europe. This waterway, lined with fortresses and castles, rises in Germany's Black Forest and runs for 1,770 miles to the Black Sea. The Danube is an essential commercial thoroughfare for central and southeastern Europe, and several river cruise companies sail vessels on it year-round. Destinations along this river include Vienna, Budapest, Passau and Bratislava.