These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

Amsterdam's former hotspot for public executions and dissections.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

In the heart of Tirana, this underground nuclear bunker has been transformed into a museum.

Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

What happens when you cross a mayor and a painter?

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

Hans Christian Andersen for the postmodern world.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

In the hometown of the Catholic saint and Nobel Peace Prize winner, a memorial dedicated to her legacy.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

Structure built from the skulls of vanquished foes.

A vast Communist-era exhibition space in the Bulgarian capital.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

Monasteries on rock pillars, once accessible only by frayed ropes.

The largest Roman amphitheater in the Balkans once held over 20,000 people, but managed to lay hidden for hundreds of years.

One of the most photographed locations in the entire city.

An abandoned Byzantine fortress and notorious prison.