This abandoned Victorian-style house was built in 1884.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Herman Melville wrote 'Moby Dick' in this landmark 18th-century house surrounded by farmland.

This astronomically-aligned stone circle was the first of its kind to be built in Great Britain after a 3,000-year hiatus.

This twice-relocated "Usonian" home is among the smallest built by master architect Frank Lloyd Wright.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

If astronomy had a ghost, it would look like this observatory.

The world’s largest underground marble quarry is hiding in Vermont.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

It would take 35 firetrucks to fill this enormous glacial pothole.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

Why have you never heard of the second most popular tourist site in New York?

A toxic ghost town sitting atop a massive coal fire.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

A field of nothing but boulders which resembles a giant's gravel driveway.