This sculpture, residing in a quiet corner of a London park, honors the victims of 9/11.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Hans Christian Andersen for the postmodern world.

In 1943 the British military took control of this village, telling residents they had to leave temporarily. The villagers were never allowed to return.

The first archaeological site discovered by aerial photography.

Famously misunderstood wonder of the ancient world

Soldiers carved these regimental badges into the chalk hills in remembrance of those who died in World War I.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

This remote castle was built to be a wealthy businessman's palace of vice but is now simply a historic vacation cottage.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

It's said the devil used this mushroom rock as a table for a late-night meal.

A triumphal steel arch on the side of a German mountain.

Ruins of an aerial tramway that ran for only eight years.

This 18th-century folly is one of Europe's rare "garden mosques."

This inconspicuous pharmacy went down in history as the first gas station in the world after fueling the first road trip ever taken.

A collection of 4,000 thimbles that's more versatile than one might imagine.

A striking 12th-century-style castle built on the edge of a cliff.