This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

This snug medieval lane is one of the narrowest streets in the world.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

Site of the first pathological and bacteriological research facility in the United States.

A crumbling hospital from the 1850s on Roosevelt Island.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

One of only two commuter aerial tramways in the United States.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Haunted Victorian house that inspired a legendary "Ghostbusters" court ruling.

Astonishing collection of helmets, scientific instruments, and medical models.

Protecting the future of some of the rarest and most misunderstood mammals of North America.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

This micro-nation may be some sort of prank, but its constitution sure seems official.

A fake Transylvanian castle houses a cathedral of antlers.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

Ever-growing collection of devils in art.

These crumbling Latvian forts make for some haunting seaside ruins.

A narrow strip of land is home to the tallest migrating dunes in Europe.