Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

A wunderkammer of mysterious objects and stories.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

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

This almost-forgotten underground dungeon housed several convicts over the years, including Caravaggio.

For over two centuries, this palace served as a residence for the Holy Roman Inquisition's leaders, a courthouse, and a prison.

Despite the name, these small saltwater swimming pools have nothing to do with the Romans.

An 18th-century hunting lodge turned haunted Baroque palace.

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

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

These lesser-known Maltese catacombs date back over 1,700 years.

A centuries-old forgotten underworld lies beneath Malta.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

This subterranean necropolis holds three floors of antler-dug grave caves.

A surreal botanical garden with an even more surreal tour guide.

A beautifully well-preserved ancient Roman villa.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

The Emperor Tiberius' palace of debauchery.

Known for centuries as the famous Roman emperor's burial place, this monument is actually something else.

This 21st century cabinet of curiosities includes dinosaur bones, moon rocks, film memorabilia, and more.

This amazingly preserved Doric temple was abandoned before it was ever completed.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.