As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

Geothermal waterfalls in Tuscany.

Thousands of well-dressed mummies below a monastery.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

Stalactites and stalagmites in a beautifully lit cave.

Pompeii's less famous neighbor is still revealing her secrets.

The underground sanctuary of a mysterious ancient cult.

Renaissance villa and gardens complete with a tormented colossus.

The middle finger of modernity.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A 16th-century horror show built in a lovely Italian garden.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Silent memorial, using bone conduction to take people back to the Dresden Bombing of 1945.

A museum dedicated to a Cold War era sausage.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

Inside this German disco, visitors can take a literal ride on the dance floor.

Constructed by forced laborers, this submarine pen is now a museum and war memorial.

According to legend a man pooped out the window of this tower to prove that it was straight.