In the 1980s , the International Council on Monuments and Sites ( ICOMOS ) organised three conferences to assess possible nominations to the World Heritage List for sites in North Africa .
UNESCO listed Volubilis as a World Heritage Site in 1997 .
In the 1980s , the International Council on Monuments and Sites ( ICOMOS ) organised three conferences to assess possible nominations to the UNESCO     for sites in North Africa .
UNESCO listed Volubilis as a World Heritage Site in 1997 .