One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

This little museum has an exhibit devoted to the elusive forest denizens.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

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

A nondescript Seattle restaurant inherited a piece of European history.

Keeping Ballard's heritage alive with delicious, lightly battered Alaskan wild cod.

An ice cream parlor chain that caters to vegans and pinball fans equally.

A wall of chewing gum moonlights as collective art.

The house's confection-like decorations are the result of one man's painstaking work over decades.

More than 21,000 images fill this overlooked gem of a prehistoric site.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

This is one really big nut.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

A multi-storied adobe complex has been inhabited for more than a thousand years.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

These aggressively sustainable art homes look like something out of 1970's science fiction.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

A museum dedicated to the alleged Roswell Incident.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A geological mystery on Camelback Mountain.

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