It wouldn't be long after purchasing this farm, Brown would lead his siege on Harper's Ferry.

A mysterious echo seems to defy the laws of acoustics.

Nikola Tesla's former home contains an homage hidden from plain sight.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

This quiet chapel was central to a community of settlers who reclaimed an abandoned fort.

Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

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

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

This airport also offers travelers the chance to view thousands of years of Turkish history.

Although now a decaying ruin, this stone cabin's history includes several notable figures.

The cinder cone volcano with a less than complimentary name.

These free-roaming horses were once destined to disappear from the land.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

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

The Magical World of George Phar Legler.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

An abandoned stretch of elevated road in the middle of the Brazilian jungle.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

This small town was built around a marble quarry and named after one of the most famous sources of marble in the world.

For almost 100 years, this site of peace and spirituality has existed on the California coast.

Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.

A grave dedicated to the pioneers who settled California.