Dead weights honor the dead of Portugal's fishing industry.

A mocking tribute to the past and modern leadership of Prague.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

The last municipal pneumatic post system in the world was in operation for over 100 years, and may run again.

Looming communist pillar with a Czech twist.

An Orwellian sculpture with eyeball cameras watches passersby.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

The first museum in the world devoted to sexual gadgetry.

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

The hidden lair of an alchemist rediscovered in a 2002 flood.

Walk through Czech history in Prague's largest graveyard.

Living fossils in this remote Australian bay provide a glimpse of what Earth may have looked like 3.5 billion years ago.

An Amazonian hotel is the ultimate treehouse and provides stilt based accommodation.

An ancient city hidden in the heart of the Sierra Nevada mountains.

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

An explosion of natural color known as "the river that ran away from paradise."

A remarkable geological formation resembling a forest made of stone.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

Huge stone depressions which may have acted as an Incan agricultural experiment.

Tucked behind the Institute of Neurological Science down a decrepit street resides the largest display of human brains in Latin America.