This extensive collection of vintage Soviet cars is the only one of its kind in the Caucasus.

The bad-ass ride of a soul legend, housed in one of the world's few soul museums.

What looks like a normal building is really a hollow facade hiding a subway vent.

An eight-sided home built during a brief octagon craze in the 1850s.

The hidden offices underneath Memorial Bridge have been locked up since 1976.

The profile of one ill-fated deacon was emblazoned forever on this church window during the Halifax explosion.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.

This Manhattan skyscraper is a reminder of the brief but glorious age of urban air taxis.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

A stranded woman lived alone on this remote island for 18 years, inspiring the great children's novel "Island of the Blue Dolphins."

Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.

This punny mirror of another Wisconsin attraction is exactly what it sounds like.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

Here lies Lilly E. Gray, an alleged "victim of the beast," but the reason long remained a mystery.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

This picturesque abandoned home is rumored to be a spite house.

An ancient Viking village in North America that predates Columbus by 500 years.

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

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

The top of society once luxuriated in this world-class hotel, which continues to impress, even in ruin.

Hidden in a hotel parking lot is a strange historical plaque erected by an obscure fraternal society.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

Far from the shore, this sandy victim of the Skeleton Coast looks like it was plopped in the middle of the desert.

Long-forgotten artifacts give incredible insight into New York's most glamorous hotel.