Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The 10,000 Torii shrine.

Eighty million natural history specimens call this gargantuan museum home.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

San Francisco's newly reopened hands-on science museum.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

A hands-off space for graffiti artists to hone and display their skills.

Northern Ireland's Brobdingnagian stepping stones.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

One part local history, 99 parts gruesome haunted house.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

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

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

The atmospheric road was never meant to be so creepy.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Famously misunderstood wonder of the ancient world

The only theatre in the world constructed specifically for sound movement.

This South London cemetery holds the remains of more than 15,000 people.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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