A house carved into a rock in the 1940s.

Oddly shaped rock formation, misassociated with a nearby utopian community.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Legends surround this jagged rock formation in the New Mexico desert.

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

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Tucked in the back of this amazing antique store is an important piece of medical history.

Even for Egyptian royalty, the afterlife was bring-your-own-beef.

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

While it now takes more than a dime to open an account this historic Brooklyn bank still displays the opulence of the gilded age in which it was built.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

Walking around West Harlem reveals a scavenger hunt of beautiful bird murals.

Red frames showcase remnants of one of New York's original subway stations.

The first piece of public art dedicated to LGBT rights.

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

One kilometer of thick brass rod laid out before your eyes.

The mummified relics of an American missionary.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Little Red Lighthouse under the George Washington Bridge.

The most confusing clock in New York.

A modern zoetrope on the New York City subway.