This demon atop the Notre-Dame de Paris looks utterly bored.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

This rustic old building is said to be the most photographed barn in America.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

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

A beautiful geyser under environmental threat.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

Towering basalt columns, a creation of fire and ice.

Quite simply the largest tree in the world (by volume).

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The fifth-longest natural arch in the world, and the longest outside China.

When ecosystems collide in the arid Southwest.

The largest self-built castle in the U.S., six decades in the making.

The highest bridge in America was built for an almost unnervingly small amount of money.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

Rippling sand dunes frozen in the Arizona rock.