A wild west land agreement was etched right onto this historic Idaho stone.

A few dilapidated structures are all that remain of this deserted former silver mining town.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

See just what life was like in a 19th-century prospecting town.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

This once rural mansion now sits in the heart of the city.

The two-cell building in Nebraska was briefly owned by a teenage boy and then a Hollywood dummy.

America's smallest town is run by its single citizen/mayor/librarian/bartender.

An experimental, automotive replica of Stonehenge.

This historic railroad hotel built from Kansas limestone was once the most popular hotels for traveling salesmen in the midwest.

This mid-19th-century dugout was once home to a Swedish family as they erected their homestead.

A cannon designed to fire an atomic warhead.

These otherworldly limestone formations jut out from the Kansas prairie.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

More gold than anywhere else, ever.

New York City's smallest piece of private property.

Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.

Constructed in 1676, this stone memorial is believed to be the oldest veteran's memorial in the United States.

The only surviving fragment of the lost Narragansett Pier Casino.

This historic Rhode Island mini-cemetery features a number of headstones run through with mysterious holes.

Abandoned Coast Artillery fort now serves as a graffiti canvas and sightseeing vantage point.