Communism's topsy-turvy effect on Poland has been brought to life in this wacky tourist trap.

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

An ancient Egyptian temple in the middle of Madrid, Spain.

Commonly acknowledged as the only public monument to the Devil himself.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

Breathtaking and huge 430 year old maps of Italy.

The Pope’s secret escape route.

Rome’s legendary peephole vista is also a former Crusader stronghold.

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

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

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

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

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

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

A Nesting Doll of Churches.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

This Communist-era residential block is one of the longest residential building in Europe.

This antique thermometer honors the creator of the first universal temperature scale.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.