A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Tucked in an urban forest, this restaurant specializes in homemade, healing rakijas.

Blue-green pools and smooth stones comprise one of Spain’s most idyllic hidden wonders.

Eat like pre-Columbian Native Americans in this New Mexico restaurant within the Indian Pueblo Cultural Center.

Have a steam and some blini at this cafe in a century-old bathhouse.

The most important and best preserved remnant of West Africa's powerful Songhai Empire.

This remote desert watering hole has a connection to a curious chapter of American history.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

Some of Arizona's best spit-roasted tacos al pastor can be found at a weekend swap meet.

Time travel with sweets across history at this research-based candy store.

A unique collection of diving equipment spanning antiquity to the present day.

Ancient paintings known as the "Sistine Chapel of Cave Art."

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

Ten shipwreck-shaped chalets lie along the sand dunes on Namibia’s Skeleton Coast.

A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

Twelve hundred stone carvings guard this off-the-beaten-path Buddhist temple.

One of the largest and oldest caravansaries in Persia.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

A mysterious "wedding cake" castle in the middle of the urban desert.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

One of the American Southwest's most extensive collections of Navajo rock art.