Renaissance villa and gardens complete with a tormented colossus.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

Go inside to really appreciate this 500-year-old technological masterpiece.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

The plague quarantine island home to the alleged "Vampire of Venice."

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Venice's island of the dead.

A beautiful maze marks where three countries meet.

According to legend it was a nap taken under this tree that kicked off the California Gold Rush.

Puzzles within puzzles hide a golden treasure in this hedge maze.

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

The atmospheric road was never meant to be so creepy.

The bones of this aquatic dinosaur turned to opal over the centuries and the beast's remains were almost sold as jewelry.

An ethereal glowing blue ocean cave in Croatia.

A musical instrument played by the sea.

Humble beginnings for one of the world's most famous scientists.

The remains of a sunken military ship wreck visible through clear water.

A forgotten monument to Yugoslavian freedom.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

Where the lovelorn find a home for their sentimental keepsakes.

The resting place for anonymous victims of the Danube's dark waters.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

Museum dedicated to the terror regimes of Hungary.