After 400 years of being closed to the public, this monastery's underground tunnels and secret garden are now a museum.

In 1952, this restaurant began selling the Colonel's “secret” recipe.

The ruins of a 13th-century monastery that long served as a place of refuge from wars and raids.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

This mansion on an island off the coast of Georgia once belonged to a 108-year-old heiress.

Despite the ever pressing encroachment of urban sprawl this grand New Orleans manse still stands.

Her final resting place was intended to be modest and private, but the power of her popularity continues to draw visitors.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Where condemned pirates met their grisly end at the gallows on the River Thames.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

Journey through a collection of over 35,000 Halloween items from all generations.

An abandoned saucer-shaped monument in the Bulgarian mountains.

A magnificent, glittering building tucked into a tiny Bulgarian mountain town.

The remarkably well-preserved final resting place of a powerful ancient Thracian king.

UNESCO-protected ancient burial ground.

A supersonic jet stands on a pedestal in this rural village as a monument to military aviation.

Overlooking the harbor is a beautiful neglected mansion guarded by two Egyptian sphinxes.

This small town Texas cemetery is said to be the burial site of a UFO pilot who crashed in the 1800s.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

Bioluminescent firefly squid light up this Japanese fishing port.