This quiet, unassuming spot in Budapest was the birthplace of the bloody 1956 Hungarian Revolution.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

This hidden art nouveau gem was designed by an architect in search of a national style.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

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

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.

A Milanese café entirely designed by the American director Wes Anderson.

Nestled in the heart of Milan is a real wunderkammer of morbid curiosities.

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

This giant middle finger statue sends an unambiguous message to Italy's bankers.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

The secret medieval communication system will whisk your words above the noise of the crowd.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

Drink wine handed out through a window as part of an age-old tradition.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

The middle finger of modernity.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.