This former lieutenant governor's home is brimming with curiosities.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

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

Pittsburgh's literal underground railroad.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

In this relatively flat state the highest point is an honored place.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

A house covered entirely with shells.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.