It's a mystery why these remains were found with no traces of their bodies in sight.

Murals of the wild parties once held on the frozen River Thames.

An ancient stone wall formed by lava that was a frequent stop during funeral marches.

The weathered grave of a medieval anchoress who walled herself up in a cell attached to a church.

This rare surviving broch is one of Scotland's most impressive Bronze Age structures.

An enigmatic natural rock formation with a manmade passage cut through the center.

This neolithic stone grave has been altered and restored so often its now more neo than lithic.

This 13th century castle is chock full of ghosts and impossibly rare cows.

This trio of neolithic stone monuments are fabled to be a king and his knights that were petrified by a witch.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

Perhaps the only prehistoric monument with its very own public bus stop.

Artists have long been drawn to these atmospheric 12th-century ruins.

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

The 5,000-year-old megalith is believed to be Scotland's tallest standing stone.

Seat of the Duke and Duchess of Devonshire for centuries.

The enormous earthwork sculpture honors the ponies that lived and worked in the old colliery.

Legend says these rocks used to be hunting dogs, a story that may have inspired Sherlock Holmes' most famous case.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

This site contains overlapping ancient graveyards that existed about 1,000 years apart.

What happened to the three lighthouse keepers who vanished from this place remains a mystery over a century later.

Man-made cave with enigmatic carvings, some say made by the Knights Templar themselves.

This remote Scottish isle is only inhabited by seals, birds, and the memory of a tragic settlement.

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