Ancient pueblos built into the base of a natural canyon wall.

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

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

Make a wish at what might be America's only Catholic shrine to a sinner.

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

The handsome statue is a tribute to the post riders who traversed 52 miles of tough Arizona terrain.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

This abandoned horse racing track was an exercise in hubris from its inception.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.