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

The magic's in the hole!

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A beautiful geyser under environmental threat.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Hollowed out cedar log tubs set in an ancient towering forest.

A giant Troll lurks under one of Seattle's oldest bridges.

A battle between nature and architecture in the Cambodian jungle.

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

The seamy, underground secrets of Portland's criminal past.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Macabre astrological automaton clock dating to the late 1400s.

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

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