There is a little secret under a small town in Italy. It began as the work of one man and expanded over the years. And the beauty that has been created is stunning -- and all done in secret by a small, tight-lipped group.
Nestling in the foothills of the Alps in northern Italy, 30 miles from the ancient city of Turin, lies the valley of Valchiusella. Peppered with medieval villages, the hillside scenery is certainly picturesque.
But it is deep underground, buried into the ancient rock, that the region's greatest wonders are concealed.
Here, 100ft down and hidden from public view, lies an astonishing secret - one that has drawn comparisons with the fabled city of Atlantis and has been dubbed 'the Eighth Wonder of the World' by the Italian government.
For weaving their way underneath the hillside are nine ornate temples, on five levels, whose scale and opulence take the breath away.
Constructed like a three-dimensional book, narrating the history of humanity, they are linked by hundreds of metres of richly decorated tunnels and occupy almost 300,000 cubic feet - Big Ben is 15,000 cubic feet.
Few have been granted permission to see these marvels.
Indeed, the Italian government was not even aware of their existence until a few years ago.
But the 'Temples of Damanhur' are not the great legacy of some long-lost civilisation, they are the work of a 57-year-old former insurance broker from northern Italy who, inspired by a childhood vision, began digging into the rock.
You have got to look at the pictures that go along with the article. They are truly stunning, and testify to the ingenuity of those involved in creating what some call the eighth wonder of the world.