Hidden in the northern region of Costa Rica, the Celeste River (Río Celeste) winds through Tenorio Volcano National Park with a color so vivid it seems unreal. The river’s striking turquoise hue is caused by a natural chemical reaction between two mineral-rich streams, Quebrada Agria and Río Buena Vista, which merge at a point known as "El Teñidero." This one-of-a-kind phenomenon creates the illusion that the water has been dyed blue, even though no pigments are present.

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.

The quaint village of St. Paul De Vence is situated on top of a hill overlooking the beautiful countryside. This medieval, walled town offers historic buildings, hidden alleyways, museums and many specialty shops.

Te Anau sits on the edge of New Zealand’s second-largest lake, acting as the unofficial gateway to Fiordland National Park. While it’s often viewed as a starting point for trips to Milford Sound, the town itself offers a slower, more scenic way to experience the South Island’s dramatic landscapes. Te Anau’s lakefront is a mix of walking paths, local birdlife, and wide-open views across snow-dusted peaks.

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).