Every summer West Seattle experiences a housing bloom.

This canyon is named for a unique geologic formation where the river vanishes underground near the mouth of the canyon and reappears farther down.

Deep into the lower floors of Pike Place, find a date with fowl fate.

The only natural cave bath in all of Europe.

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

This art center is way beyond your average pumpkin-carving operation.

This oversize piece of novelty cookware once cooked the largest pancake in the world.

Eclectic architecture in the woods of New York.

In 1975, a forestry worker in Arizona claimed to have been abducted by a UFO.

A city park that sits on top of a freeway.

Jurassic Park in South Africa.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

The bones of an old zoo crumbling in the shadow of a new one.

Secluded amid upstate New York’s Adirondack Mountains lies this subterranean emblem of a nation on the brink of nuclear war. And it's for sale.

Hidden amid a collection of trails is the site of a tragic crash.

Narrow gorges and deep pools created by long-ago glaciers.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

Roman ruins top white travertine terraces formed by ancient hot springs.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

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

Couple's personal collection of pinball machines turned public pinball museum.

This now abandoned arch bridge was constructed during the Great Depression.

An abandoned saucer-shaped monument in the Bulgarian mountains.