Places KLM602 Wants to Go

Once a state-of-the-art tuberculosis treatment spa, these ruins are now ruled by paintball players.

Saint Borromeo often prayed in this austere crypt during the 16th century.

The enigmatic sculpture hides above an escalator in a Milan metro station.

Remnants of cone-shaped fascist bomb shelters in Milan.

In the 1940s, Italian architect Mario Cavallè built a dozen of these round homes in northern Milan.

A larger-than-life house of cards stands outside the house of a former fashion designer.

An exclusive waiting room built for the royal family in the 1920s is hidden in Milan’s central station.

A brutalist gem towering over the heart of Milan.

Vast network of air raid tunnels beneath Lombardy's capital.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

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

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

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

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

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

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

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

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

Life in this isolated, hilltop lighthouse was lonely, but it sure was lovely.

This historic home has survived wars, drought, and financial woes to become a California landmark.

After the nearby mercury mine shut down, this town was abandoned and declared a Superfund site.

This former open-pit manganese mine is now a massive graffiti canvas.

One of the best-preserved ghost towns in Arizona speaks to the difficulties of establishing mining towns in the 19th century American West.