These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

The glowing blue Nymphaeum of Emperor Tiberius.

This blowhole is supposedly caused by a trapped monster.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A toweringly silly piece of modern art has been delighting locals since the 1980s.

The only arched bridge made of stone on the entire Mississippi River.

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

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

An obscure waterfall that looks like something out of a fantasy novel.

The magic's in the hole!

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

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

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

This famous bridge twisted itself into oblivion, but not for the reason you might think.

The small town of Poulsbo in Washington state is the next best thing to the Kingdom of Norway.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A wall of chewing gum moonlights as collective art.

A museum dedicated to the history and exploration of both popular music and science fiction.

A 50-year old dive bar that has its own yacht club.

A 1,000 pound brass bell commemorates a time when this small maritime neighborhood was actually its own separate city.

A commemorative mural in this tiny Ballard park honors the neighborhood's rich Scandinavian ties, particularly with Seattle's Norwegian sister city Bergen.

Always a new use for this old building.