Serbia is a country where centuries-old monasteries sit just a short drive from lively cities, and where the past is never far from daily life. In Belgrade, the capital, Kalemegdan Fortress offers panoramic views where the Danube meets the Sava River. This fortress has witnessed more than 100 battles and been rebuilt many times over two millennia. Within its walls are Roman ruins, an open-air military museum, and quiet park paths perfect for wandering between centuries of layered history.

Narvik’s most striking features is its natural setting. The town sits between steep fjords and rugged mountains, making it one of the few places in Norway where visitors can ski with ocean views. Narvikfjellet, the local mountain resort, operates in both winter and summer. During the colder months, it's popular for alpine skiing and northern lights viewing; in summer, the gondola runs for hikers and photographers eager to take in views of the Ofotfjord from the summit.

Acajutla is the principal Pacific port of El Salvador, located in the department of Sonsonate along the country’s western coastline. The city plays an important role in trade and transportation, with cargo ships, fishing boats, and industrial facilities shaping much of the waterfront activity.

If you find yourself in Rotterdam, there's a strong chance you've arrived by water. This popular port city (the second largest in the Netherlands) has gone through an architectural renaissance since World War II, with daring, innovative structures dotting the city (cube houses!) and defining its skyline. Café culture is on the rise here, so grab yourself a table and a cup.

Natchez is a river city in southwestern Mississippi overlooking the Mississippi River bluffs near the Louisiana border. It is recognized for its large collection of preserved antebellum homes, brick streets, and long connection to river trade.