Lake Retba, also known as Lac Rose, is a shallow salt lake near the Atlantic coast, north of Dakar. Its water is separated from the ocean by a narrow belt of dunes, creating a landscape of pale sand, salt flats, and low scrub. The lake is best known for its high salt concentration, which can produce pink, reddish, or mauve tones under particular conditions of sunlight and water chemistry. Its appearance changes with weather and light rather than remaining one fixed color.

Serbia is a country where centuries-old monasteries sit just a short drive from lively cities, and where the past is never far from daily life. In Belgrade, the capital, Kalemegdan Fortress offers panoramic views where the Danube meets the Sava River. This fortress has witnessed more than 100 battles and been rebuilt many times over two millennia. Within its walls are Roman ruins, an open-air military museum, and quiet park paths perfect for wandering between centuries of layered history.

Explore palm forests, mangrove creeks and savanna while discovering the wildlife and cultural traditions of The Gambia.

It's the largest of the three U.S. Virgin Islands, lying 40 miles south of St. Thomas and St. John. While its history is laced with tales of pirates and privateers, the island today maintains a slower, more quiet pace than its sisters to the north.

Set along the Seine, Caudebec-en-Caux is notable for its dramatic Notre-Dame church and Maison des Templier (The Templars' House).