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.

Barranquilla sits near the mouth of the Magdalena River on Columbia's Caribbean side. It is a major seaport and a center of commerce, but everyone breaks loose for four days in February for one of the liveliest carnivals outside of Rio.

The Yangtze River, a magnificent artery of China, stretches over 6,300 kilometers (3,917 miles) from the Tibetan Plateau to the East China Sea. As the longest river in Asia and the third longest in the world, it weaves through breathtaking landscapes and vibrant cities, making it a prime destination for travelers seeking both adventure and cultural immersion.

Nestled at the base of the Great Rift Valley, Lake Manyara is a hidden gem in northern Tanzania that offers an unforgettable safari experience. The lake is part of Lake Manyara National Park, which is known for its dramatic landscapes, from dense groundwater forests to grassy plains. Wildlife enthusiasts will be thrilled to explore this compact park, home to an impressive variety of animals, including elephants, hippos, and the famous tree-climbing lions.

Tbilisi, the capital of Georgia, is a city where tradition and modern life blend seamlessly. Set along the banks of the Kura River and surrounded by hills, its layout reflects centuries of change and cultural exchange. The Old Town, with its cobbled lanes and wooden balconies, is a living museum of architecture, showcasing influences from Persian, Ottoman, and Russian eras. Above it all, the Narikala Fortress stands watch, offering sweeping views of the city below.