Ao Nang is a coastal town in Thailand’s Krabi province, set against a backdrop of limestone cliffs that rise abruptly from the shoreline. Once a quiet fishing village, it has grown into a lively seaside hub while still retaining strong ties to the surrounding landscape.

Whitehorse, the capital of Canada’s Yukon Territory, sits along the Yukon River and serves as the cultural, economic, and transportation heart of the North. Its history is closely tied to the Klondike Gold Rush of the late 1890s, when prospectors passed through the area on their way to Dawson City.

Coursing through 10 countries, the Danube is the second-longest river in Europe. This waterway, lined with fortresses and castles, rises in Germany's Black Forest and runs for 1,770 miles to the Black Sea. The Danube is an essential commercial thoroughfare for central and southeastern Europe, and several river cruise companies sail vessels on it year-round. Destinations along this river include Vienna, Budapest, Passau and Bratislava.

Madagascar, the world’s fourth-largest island, lies off the southeastern coast of Africa and is renowned for its extraordinary biodiversity and unique landscapes. Its rainforests, spiny deserts, and highland plateaus provide habitats for species found nowhere else on Earth.

Kyle of Lochalsh, located on the west coast of the Scottish Highlands, serves as a gateway to the Isle of Skye via the Skye Bridge, but the village itself deserves more than a passing glance. Once the terminus of the Highland Railway, the town still welcomes visitors by train on one of the UK’s most scenic routes. The line from Inverness to Kyle passes through remote glens, past lochs and mountain ranges, ending just steps from the waterfront.