Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

This former World War II artillery defense site was built to guard the industrial city of Glasgow.