Op-art architecture designed for happiness.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

The painter of "The Scream" is laid to rest under a stoic bust of himself in the humble corner of an Oslo cemetery.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

The design of this beautifully crafted building was inspired by Norwegian glaciers.

The stunning interior of this Gothic church is covered in ornate gold details.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This small chapel is built of human bones and decorated with a golden skeleton.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

This century-old cinema house has a marquee that has been hand painted by a single man for over 25 years.

The footprint of a frustrated devil in Munich's Cathedral.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

A series of five defunct panopticon prisons in Cuba.

This singular art museum in São Paulo is unique inside and out.

This giant mural of Santa Muerte in downtown São Paulo reminds passersby of their own mortality.