Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

The mystery of this small, brick pond eluded its possibly only investigator until his death.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

Ship-sized kinetic sculptural fantasy.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

Two plaques commemorate the site of Shakespeare's first theatre.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Charles Babbage's proto-computer, painstakingly brought to life.

Largest lake in Great Britain measured by surface area.

The monster at the center of the Darwin Center Spirit Collection.

A clock designed to run with perfect accuracy for 10,000 years.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

Repository for more than 22 million pickled specimens.

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

Famously misunderstood wonder of the ancient world

This tiny island featuring 9th-century Viking ruins is only accessible at low tide.

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

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

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

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

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