The most visited, and possibly most controversial, museum in Germany.

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

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

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

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

Home to items never before seen by the public.

A beautiful geyser under environmental threat.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A layered tribute to the work of mosaicist Isaiah Zagar.

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

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

Elevated freight railway turned wildly successful urban park.

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

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

Medicinal spa created with the discharge from a geothermal energy plant.

A terrific purveyor of natural history objects and curios.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Traditional 15th century Chinese garden in the middle of Vancouver.

The colorful, smiling concrete silos of Vancouver.

Shoreline strewn with the remains of ghostly fallen trees.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

Stroll through a wonderland of stupendous moss-covered trees.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.