Southeast Spain's seaport of Cartagena is a large naval base on the Mediterranean coast. The city was founded in 220 B.C. and boasts Roman ruins, mosaics and murals.

Set on the Adriatic Sea, Zadar, Croatia, is a major Dalmatia historical center and a tourism magnet. Walk ancient streets, see Roman ruins and enjoy white-sand beaches.

This vibrant and picturesque city sits near the German border and is the 2nd most popular tourist city in France. Its historic city center is classified a World Heritage Site by UNESCO, and the Stasbourg Cathedral is one of the finest examples of Rayonnant Gothic architecture.

Jeju, often written as Cheju in older English sources, is South Korea’s largest island and lies in the Korea Strait south of the Korean Peninsula. The island is known for its volcanic landscapes, coastal cliffs, lava tubes, and the prominent peak of Hallasan, which rises at its center.

Monterrey, the capital of Nuevo León, stands at the foot of the Sierra Madre Oriental and has long been recognized as one of Mexico’s most industrial and innovative cities. The Macroplaza is one of the largest public squares in Latin America and links historic buildings like the 18th-century Metropolitan Cathedral with newer sites like the Museo de Historia Mexicana and the Faro del Comercio, a towering orange structure that beams a green laser across the sky each night.