Trebinje, the southernmost city in Bosnia and Herzegovina, sits just a short drive from the Adriatic coast but offers a completely different rhythm. Framed by hills and set along the Trebišnjica River, the city has a history stretching back to Roman times. The river that winds through the city is one of the longest sinking rivers in the world and often disappears underground and resurfaces in various places.

Even though Linköping has developed into an industrial center and is Sweden's fifth-largest city, it maintains a small-town atmosphere. Old Linköping is the restored town center with preserved buildings from the 18th and 19th centuries. The tower of the impressive Linköping Cathedral, which took nearly 300 years to complete, can be seen from a distance of more than 10 kilometers.

Pingyao, a city steeped in ancient charm, offers a remarkable glimpse into China’s rich history. This well-preserved city, a UNESCO World Heritage Site, is renowned for its classical ancient architecture, which remains largely intact since the Ming and Qing dynasties. Wander through the Pingyao Ancient City Wall, a formidable structure that encircles the city and provides panoramic views of the surrounding landscape.

Passau sits on the confluence of the Danube, the Inn and the Ilz, so it is fitting that it is known as "the Dreiflüssestadt", which means the “City of Three Rivers.” The historical center offers a cathedral, churches and museums to explore, and the embankment is perfect for a romantic stroll.

Abilene is no-nonsense and traditional, but it's just as capable of having a good time as any rip-roaring cowpoke. When you're in Abilene, take time to see the Abilene Zoo, particularly the Texas Plains exhibit, a unique collection of species native to that part of the country (if you've never seen a javelina, here's your chance).