The oldest still-operating tavern in the United States was once owned by a pirate.

Three small rooms in the jungle house the most elaborate and intact murals of the Mayan world.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

A fake medieval village in the middle of Turin.

Secret refuge and museum of the Duke of Florence.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

An alchemist's "magic door" stands in the middle of a Roman park.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

Now abandoned, the world's first torpedo factory is crumbling into the sea.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

This unique building in the main square stands out among the city's typically Baroque architecture.

Ruins of a 10th century church tucked away deep in a botanical garden.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Erotic art covers the walls of the largest ancient pleasure palace.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

The broken skateboards that became a poignant memorial to a murdered skater.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

Thousands of well-dressed mummies below a monastery.