The bubbling, turquoise crystalline pools of Plitvice Lakes National Park comprise one of Croatia's most popular tourist destinations. Just a two-hour drive from Zagreb, the national park offers 50 acres of forest and lake. In winter, it's a wonderland of frozen waterfalls. In summer, the park is lush with greenery. Wooden walkways and hiking trails traverse the porous karst limestone. This World Heritage Site is a veritable wildlife haven, home to everything from birds to boars and even bears.

We hear the question, "What’s the next Prague?" a lot. But while we’re all for discovering great new destinations, we hardly think Prague is over. Sure, everyone’s heard of it, but it’s still a grand city with extraordinary historic and cultural sights, and it’s definitely worth a visit. The often-rebuilt Prague Castle has overlooked the city since the 9th century, and the synagogues and cemetery of the Jewish Quarter are must-sees. Nightlife here is diverse and plentiful, from trendy clubs to sophisticated wine bars to late-night cellar bars.

Amsterdam is truly a biker’s city, although pedaling along the labyrinthine streets can get a little chaotic. Stick to walking and you won’t be disappointed. The gentle canals make a perfect backdrop for exploring the Jordaan and Rembrandtplein square. Pop into the Red Light District if you must—if only so you can say you’ve been there. The Anne Frank House is one of the most moving experiences a traveller can have, and the Van Gogh Museum boasts a sensational collection of works.

Lusaka, the capital and largest city in Zambia, can be a confusing and chaotic place for visitors not familiar with its unplanned neighborhoods and streets. Busy stores and shopping centers line Cairo Road and the surrounding area. Nearby covered markets sell anything from souvenir figurines to spare engine parts. Just south of Lusaka is the Munda Wanga Environmental Park, which features botanic gardens, a wildlife park and sanctuary, picnic areas, swimming pools, and a relaxing terrace bar.