A major port city on the River Scheldt, Antwerp, Belgium, is a cultural, historical, and commercial hub and the country's most populous city. Known as the "diamond capital of the world," Antwerp is renowned for its cut diamonds.

Tulum, a jewel of the Riviera Maya, is a blend of ancient history, vibrant culture, and pristine natural beauty. Perched on a cliff overlooking the turquoise Caribbean Sea, the Tulum Ruins stand as one of the last cities built and inhabited by the Maya civilization. The well-preserved El Castillo, Temple of the Frescoes, and Temple of the Descending God offer insight into the architectural prowess and spiritual life of the ancient Maya.

Located in the Gulf of Thailand, Koh Samui is an island off the coast of Thailand and a popular vacation destination for locals and tourists alike.

Barranquilla sits near the mouth of the Magdalena River on Columbia's Caribbean side. It is a major seaport and a center of commerce, but everyone breaks loose for four days in February for one of the liveliest carnivals outside of Rio.

Situated on the northeastern coast of Greece, Kavala is a picturesque port city popular for its archaeological treasures, historic old town, and scenic beach. Be sure to explore the city's best known sites, including the Panagia neighborhood, the Kavala Castle, the towering Aqueduct, and the Kavala Archaeological Museum.