Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

Historic site where Native American hunters once trapped and killed buffalo.

A sleepy little town that had the greatest landslide in North American history fall on it.

The only road through the heart of Glacier National Park.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

An inconspicuous footbridge beloved by San Diego locals.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

Just a few miles off the western coast of Ireland lies an isle steeped in Irish literary history.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

This preserved village shows the modest lifestyles of the area's 19th-century Chinese gold miners.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

The fairy tale castle of the "fairy-tale king."

A walk through the historic city center, under the streets of Seattle.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

France's most famous cemetery, with some of its most curious tombs.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Macabre astrological automaton clock dating to the late 1400s.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Most-visited and most-photographed slot canyon in the American Southwest.

On the Oregon coast there is a natural hole that seems to be draining the sea.