Hidden in the northern region of Costa Rica, the Celeste River (Río Celeste) winds through Tenorio Volcano National Park with a color so vivid it seems unreal. The river’s striking turquoise hue is caused by a natural chemical reaction between two mineral-rich streams, Quebrada Agria and Río Buena Vista, which merge at a point known as "El Teñidero." This one-of-a-kind phenomenon creates the illusion that the water has been dyed blue, even though no pigments are present.

The Ijssel is is a slow-moving lowlands river flowing northeastward through the Netherlands as a distributary of the Rhine.

Bulawayo is Zimbabwe’s second-largest city and a place where industrial heritage and deep cultural roots intersect. Founded near the former capital of the Ndebele kingdom, the city carries strong historical significance tied to King Lobengula and the resistance to colonial expansion.

Juneau's majestic sprawl and abundance of nature set it apart from most capital cities in America. Tourists arrive via air or water, many coming in on cruise ships.

St. Lucia is an island of verdant landscapes in every direction: A dense rain forest rises up and covers The Pitons' twin peaks, and in the valleys, the sun's rays dance upon the large yellow-green leaves of banana plants. Beyond all the greenery, you'll find isolated coves, stunning beaches, colonial towns, quiet fishing villages and first-class yachting facilities.