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

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

Gorgeous purple flowers drape from the world's largest blossoming plant.

First LEED-certified gas station in the United States.

The graffiti-covered remnants of a former triangulation station are balanced precariously on this California peak.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

360-degree virtual reality chamber physically immerses scientists into their data.

A table rock formation that has been intriguing West Virginians for years.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

This century-old roadside attraction is full of bizarre rock formations.

Legend says that these tall basalt pillars are the petrified wives of a trickster god.

A local prank turned town icon.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

Crumbling hotel echoes with the sounds of the '30s.

This massive roadside mascot was the first version of the giant to illustrate his butt.

This sprawling mini-golf empire is an impressive testament to a disappearing attraction.

Where Nor'easters go to die.

If you want to take a peek at Area 51, this is legally as close as you're going to get.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

A volcanic landmark located on an Ice age lake bed.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.