Located on the coast of Queensland, Australia, Airlie Beach is a favorite stop for cruises along the Great Barrier Reef. This coastal paradise offers spectacular beaches and easy access to the Whitsunday Islands, Conway National Park, and, of course, the Great Barrier Reef.

Costa Rica is a Central American tropical paradise beyond compare. The wildlife is colorful and memorable, from toucans to spider monkeys to sloths. Volcanoes, ziplines, and prime cycling, hiking and surfing opportunities are there for active travelers. For more relaxed vacationers, beaches and vibrant nightlife—from rooftop bars to romantic dining—await.

Originating as a tiny fishing village in 1038, modern Kehl has become an important link between Germany and France. Rhine River cruises most often use Kehl as their gateway to the much larger and better-known Strasbourg. The savvy traveler, though, might choose to skip the jaunt across the river and enjoy many similar sights, shopping and cuisine as those offered in the teeming French city.

Argentina has everything from historical sites to casinos, warm sunny beaches to beautiful scenery. Although first-class accommodations are not available at all locations, the hospitality is one of the friendliest in the world.

Welcome to Nairobi, safari capital and the largest city in Kenya. At one time a simple hydration spot for the Maasai, this high-energy East African city now strikes a balance between the cosmopolitan and the natural. In its adjacent Nairobi National Park, visitors will see lions, zebras, giraffes and rare black rhinos.