From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Fantastic views and thousands of love locks.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

This poignant art installation raises awareness of violence against women.

For hundreds of years, this huge figure has been blessing visitors before they explore his body.

Massive galleon from a box-office bomb docked in Genoa.

The train platform where Jews were sent to concentration camps is now preserved as a Holocaust memorial.

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

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

During World War II, this rice mill became a Nazi concentration camp.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A collection of grotesques lines the walls of this Italian villa.

142 ceramic steps become a mosaic once a year.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

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

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

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

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

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Europe’s oldest natural human mummy.

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

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