A museum founded to reflect on and remember the human rights abuses under Chilean dictator Augusto Pinochet.

What was once a unique system of urban elevators is turning into a mechanical ruin.

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

Once a year, ambitious surfers can ride the world's largest river.

Beautiful public park off the beaten path and away from tourists.

These termites have an large and deadly abode—impressive by day, dazzling by night.

Part of one of the largest flooded cavities on the planet, and littered with prehistoric animal bones.

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

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

A preserved portion of an ancient Athens barrier is displayed in a hotel basement.

Step inside an ancient beehive tomb built for a mysterious cult hero.

The abandoned summer estate of the former Greek Royal Family.

This little-known, 35,000-specimen collection in Greece is a lepidopterist's dream.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

An autonomous republic of Orthodox monks.

Bacteria and algae give the salty water its bubblegum hue.

An impressive home made of stone, carved more than a century ago.

This huge abandoned fortress hidden inside a mountain holds a world of subterranean secrets.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

An ancient Egyptian temple in the middle of Madrid, Spain.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.