This species of wild goat stars in witchy legends and frolics among the park's eerie rock formations.

This 18th-century project to build the world's tallest gravity dam was never completed.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

The home and birthplace of Caroline Dormon, a naturalist, artist, and the "mother of the Kisatchie National Forest."

This amazingly preserved Gold Rush town is a historian's dream.

An ancient Egyptian temple in the middle of Madrid, Spain.

In this 400-year-old hotel in Madrid, you'll find a comb in every room, an old clock, and maybe a ghost.

Order cookies baked by cloistered nuns in a 400-year-old monastery.

Meant to resemble a massive tree, the building is the best example of Spanish organicist architecture in Madrid.

Paris' linguistic guide to the international language of, yes, love.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

A mysterious, ancient collection of pre-Hispanic petroglyphs hidden deep in the Mexican desert.

This natural wonderland is a unique chance to explore a Carolina bay, a mysterious geological formation of unknown origin.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A colorful public mural in San Antonio's West Side encourages students to stay in school.

The bombed out remains of the old church were kept intact next to the new one, as a reminder of the futility of war.

Every hour on the hour a naked heroine and her leering foil appear from this giant cuckoo clock.

A labyrinthine underworld of tunnels and caverns hides beneath the city.

On Japan's Tashirojima Island, cats are king.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An automaton perched above an classic clock and watch store

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."