This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

Remote, volcanic island that Darwin, Hooker, and the Royal Navy shaped into a thriving, artificial ecosystem.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

A record-breaking pool that uses computers to turn ocean water into cleaner, private swimming water.

One of the largest Roman settlements in Portugal.

A long-disputed lighthouse built on the wrong side of a Finnish/Swedish island.

Rare signs of the former Soviet Union in the Caribbean, though not where you'd expect them.

This popular tourist cave was ignored for almost 200 years before being mined into an attraction.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

A British general, a suggestive tree, a map of paradise.

A biblically accurate ark located beneath a Hong Kong bridge is fun for the whole Christian family.

An avant-garde artist is survived by his seaside garden.

Ancient Bronze Age rampart that was used into the middle ages.

If your school was decorated with trippy graffiti, served ambrosial coffee, and was frequented by mimes, it might have been similar to this groovy cafe.

Don't worry, they don't use antique scissors.

A shrine on the shores of the Tigris.

What is left of the pillar of Saint Simeon, the voluntary martyr who climbed the column to give his sermons, remaining perched there for thirty-seven years.

A wellspring of creativity in an already artsy East London neighborhood.

East London art gallery showcasing contemporary art from Europe's Eastern Bloc.

A Moroccan getaway in the mountain range that plays the Himalayas' stunt double.

Ancient rock-hewn town that witnessed key events of Georgian history.

A gleaming white and undulating tower marks the border between Georgia and Turkey.

Earth's greatest purely vertical drop at 4,101 feet.

Unexplained bald patches in the landscape grow and recede over time, as though they are somehow alive.