These fantastically named natural pools look like something out of a Scottish myth.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

Famously misunderstood wonder of the ancient world

Along a California highway is a kind of Jurassic Park made of metal.

Structure built from the skulls of vanquished foes.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

A grand Yugoslav memorial to the group of partisans who fought and died resisting western Serbia’s Nazi occupation.

A forgotten and crumbling Yugoslav monument to the victims of fascism.

This huge metal monument is slowly being stripped to its concrete skeleton.

Croatia's towering concrete blossom grows from the site of a World War II concentration camp.

An abandoned saucer-shaped monument in the Bulgarian mountains.

This massive stone and steel monument remembers a century-old battle that cost thousands of lives and nearly destroyed the city.