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.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

The oldest operating pharmacy in the world features 800-year-old recipes.

This obscene artwork on the side of a newspaper office pokes fun at a rival paper's former editor-in-chief.

Tiny memorials honor individual victims of the Holocaust.

Cold war icon and onetime "hole" in the iron curtain.

Reminders of the Battle of Berlin still scar the railway.

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