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.

Kumai is an Indonesian port city, at the southern end of the island of Borneo. Its main tourist draws include the Patih Mamband waterfall, a popular area for diving and fishing; several white sand beaches; and the Tanjung Puting National Park, best known for its wildlife. It is also home to Camp Leakey, a research center focusing mainly on orangutans, gibbons, and the proboscis (or long-nosed)monkeys endemic to the island.

Khartoum, the capital of Sudan, sits where the Blue and White Nile rivers meet, creating a unique landscape of waterways, islands, and riverbanks.

Iquique, perched between the Pacific Ocean and the sweeping sand dunes of the Atacama Desert, offers more than just sun and surf. This coastal city in northern Chile is a duty-free port, drawing visitors with its unique blend of high-end shopping, historic districts, and adrenaline-filled adventures. Whether wandering along the palm-lined Baquedano Boulevard or gliding down the towering sand dunes on a sandboard, Iquique surprises at every turn.

Rábida Island is one of the most visually striking islands in the Galápagos, known for its deep red volcanic shoreline and quiet, unspoiled atmosphere. Located near the center of the archipelago, the island is geologically young, with iron-rich lava giving its beaches a dramatic rust-colored hue.