The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.

A slice of central Asia in the middle of Berlin.

A centuries-old forgotten underworld lies beneath Malta.

Dynastic Home of the De Piro Family.

This church is named for one of the most dramatic tales in the early Christian church.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

Ancient mysterious ruts carved in the bedrock.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

The Jesus tree of Malta bears a striking resemblance to Christ on the cross.

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

A quartet of tiled art pieces adorn the floors of this prestigious art museum.

At more than 5,000 years old, these structures are among the oldest free-standing stone buildings in the world.

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

You can crawl inside this atmospheric 5,000-year-old tomb.

Abandoned boats decaying in the largest ship graveyard in mainland Britain.

This Old West hotel, the longest in continuous operation in the state of Arizona, is claimed to be haunted.

This tangled English forest looks like something right out of a fairytale.

This historic factory peddles classic toys from the picturesque English county of Devon.

This ancient stone bridge dates back to the early Middle Ages.

At just 25 inches at its narrowest point, it's one of the tightest streets in the world.

Old Tudor home moved on thick iron rails to a new spot.

Almost nothing but earthworks remain of this long-lost castle.