This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

An abandoned stretch of elevated road in the middle of the Brazilian jungle.

The ruins of this Brazilian island prison still bear the scars of the bloody rebellion that closed it down.

The bookstore with bookshelves built into unlikely places.

A snake farm famous for its venemous varieties.

Hear the quietest sound from across the dome.

The world's first and only escalator for lazy bicycles and their daunted riders.

This empty Detroit high school was too expensive to maintain or destroy.

For a couple of months each year this Swedish city turns into a festive neon phantasmagoria.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Annual technopop celebration of peace and love.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

The world's biggest floating museum in Gothenburg, Sweden.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This chimerical bridge/tunnel appears to dead end right into the sea.

38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.

Detroit’s downtown castle is one of the oldest structures in the city.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

A Beaux-Arts triumph rises from decades of decay to become the heart of a new innovation district.

Glass and concrete building designed by Albert Kahn.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

A sudden forest of traditional Papua New Guinean art works is hidden in a corner of Stanford University.