This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

A church of bones, decorated with 40,000 human skeletons.

A surreal statue honoring Prague's favorite literary son.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

One of downtown Berlin's last reminders of its Communist past.

A fascinating insight into daily life in the Eastern Bloc.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This series of rope-style bridges brings visitors into a jungle layer that is usually reserved for birds and monkeys.

Where thousands of slaves passed through the "Door of No Return."

Road signs in Namibia mark the location of one of the five major circles of latitude.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

A desert that rolls right up to the ocean, where it's so dry animals live off the fog.

Ancient artists in the middle of nowhere.

A museum in the former home of Marxist revolutionary Leon Trotsky.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

Frida Kahlo's childhood home, now a museum of her life and works.

The world's second-largest sundial, made entirely out of stone.

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

A man-made island in scenic San Francisco Bay.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

Golden Gate Park's historic collection of plants.