A slice of central Asia in the middle of Berlin.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Macabre astrological automaton clock dating to the late 1400s.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Op-art architecture designed for happiness.

Baroque celebration of the end of the Great Plague of Vienna.

The attic of a four-century-old canal house hides a clandestine church.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The middle finger of modernity.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

Breathtaking and huge 430 year old maps of Italy.

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

A Nesting Doll of Churches.

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

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

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