Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

It was founded by Ralph Nader to educate the public about an often-maligned area of law.

Home to the "Circus" trees created by Axel Erlandson.

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

With nearly double the depth of the Grand Canyon, this Peruvian canyon is one of the deepest in the world.

An eclectic assortment of medieval architecture in a small Iowa town.

The Forest Service's surprisingly sophisticated collection of wildfire prevention art features America's most beloved bear.

Things aren't quite what they seem at this mind-bending museum.

This Seattle joint serves food inside an old train car once used by FDR.

Locals transformed this Canadian evergreen into a secret hangout with spectacular views of Vancouver's skyline.

This ancient shrine has been rebuilt every 20 years since the eighth century.

Contrary to popular belief, this secluded statue doesn't represent Pennsylvania's founder.

This remarkable prehistoric town is full of watchtowers and houses that have withstood thousands of years.

Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.

Every year locals give the bear a fresh coat of paint to preserve its signature goofy grin.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Crawl through the hole in the middle of this stone to break off a bad relationship or initiate a good one.

A magical museum of fairy tale treasures near Cyprus' buffer zone.

The stunning interior of this Gothic church is covered in ornate gold details.

This striking icon of the disputed Republic of Artsakh caused a stir at a Eurovision Song Contest.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.