You can spend the night in Dr. Frank-N-Furter's castle.

This extensive collection covers thousands of years of Polish military history.

An avant garde art museum at the University of Chicago.

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

A one-armed veteran of the Battle of Waterloo lies in a cemetery for one in the middle of a Chicago scrapyard.

An unlikely beach paradise of giant sand dunes lies between two lakes just a few minutes from Michigan's cherry country.

One of the foremost Sherlock Holmes collections is hidden away at a Toronto library.

There is a small island in the Gulf of Nicoya where the only human inhabitants are dead.

Don't be fooled by this fake medieval facade even if it is almost 300 years old.

Eighteenth-century home, where Herschel discovered the planet Uranus.

The oldest of the three remaining bridges in England with buildings on top of them.

A controversial magical figure is hidden within a diorama of the city.

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

A simple plaque remembers an act of WWI terrorism that obliterated an island and forever scarred the Statue of Liberty.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

This is what trains will look like after the zombie apocalypse.

The freeway that never was.

One man's quest for the ultimate road trip vehicle.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

A line of blue paint marks the route of the inaugural parade.