Relics ranging from ancient shrines to Venetian-style castles overlook swaths of golden sand beaches on Kos, a fertile island in Greece’s Dodecanese chain. Mega-resorts dominate the developed southern coast, while visitors looking for tranquility head to the quieter northern shores.

Encompassing two of the Netherlands’ three largest cities (Rotterdam and The Hague), Zuid-Holland (South Holland) is also home to important towns like Leiden, Gouda and Delft. And many lovely smaller towns dot the gorgeous green landscape. Alphen aan den Rijn has several interesting attractions, including Dutch history theme park Archeon. Picturesque Kinderdijk, birthplace of the legend of the Cat and the Cradle, also has many windmills that together are a UNESCO World Heritage Site.

With its hilltop castle and medieval architecture, Guimaraes looks like it's straight out of a fairy tale. Said to be Portugal's birthplace, the city boasts UNESCO status and houses manicured gardens, a historic palace, and a 13th-century church.

Bangkok is full of exquisitely decorated Buddhist temples—as you go from one to the next you’ll be continually blown away by the craftsmanship and elabourate details. But if you’d rather seek enlightenment in a gourmet meal, or dance the night away, you’ll also enjoy Bangkok—the restaurant and nightclub scenes here are among the best in the world.