Stairs often replace streets on the steep slopes of this old mining town.

Take a monster truck tour around an ostrich farm in the middle of the desert.

Limestone caves with spectacular showcase chambers.

This giant steer-skull edifice refuses to die.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

An off-the-beaten path cave with an underground lake.

Legend says train robbers stashed their gold within the depths of this unusual cave.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

Despite a recent paint job, the factory still sits empty.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

A rare wayfinding portmanteau of “Street” and “Avenue.”

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

The world's largest military aircraft cemetery.

Visitors to this public park will also find the ruins of an old western fort.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

The remains of this rugged homestead ranch offer a brief glimpse into a bygone era.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

This old train trestle and collapsed tunnel once allowed the railroad to negotiate the steep slopes of the Colorado Rockies.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

This spectacular track has run continuously since 1882.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A rugged lava field dotted with molds of the ancient pines that were growing when the volcano erupted.