Deep beneath the glass skyscrapers of the City of London, the subterranean London Mithraeum is a ghostly reminder of Britain's ancient past.
Unearthed in 1954, this ancient temple has become one of the most archaelogically significant sites in Britain.
Dedicated to the mysterious god Mithras, the temple would have been the site of secret initiation ceremonies and possibly bloody animal sacrifices.
Today the Mithraeum lies underneath Bloomberg's European headquarters and the spooky subterranean chamber in which it lies, acts as a portal back to Roman Londinium.