Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

Copenhagen's celebrated theme park and gardens.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

The largest and most famous wax anatomical collection anywhere in the world.

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

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

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

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

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

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

Venice's island of the dead.

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

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

This Italian church is as beautiful as it is common, except for the real skulls decorating the many mannequins inside.

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

This Italian foot path winds through the mountains via 52 individual tunnels.

The world's oldest surviving anatomical theater, where "the dead are pleased to help the living."

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

Machismo turned on its head: the lady's hand goes to the dude with the bigger brain.

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