This incredible collection of vintage pinball machines can be played at 25 cents a pop.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

A seemingly endless landscape of pure salt stretches far across Bolivia.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

Amsterdam's former hotspot for public executions and dissections.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This unattributed sculpture in Amsterdam is hiding in plain sight.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

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

An old department store turned Nazi prison turned artist commune.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

This sprawling Jewish cemetery is one of the largest in Europe.

This curious sculpture represents the perseverance needed to take to the skies.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

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

A replica of the Liberty Bell rang daily from West Berlin's City Hall throughout the Cold War.

One of the world's heaviest musical instruments towers within a popular urban park.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

Metro station with a claim to rock n' roll fame.

A brush maker used his factory to protect blind Jews from the Gestapo.

Tiny memorials honor individual victims of the Holocaust.