Inside ruined Afghan palace of Darul Aman
30 September 2013 Last updated at 11:43 BST
Afghanistan is remembering the death and disappearance of thousands of people under the communist regime of the late 1970s in a memorial service.
The ruined royal palace of Darul Aman - which means 'place of peace' - stands testament to that time in Afghanistan's history.
Once home to the communist-era parliament, it tells a story of decades of destruction.
David Loyn has been inside.