World Heritage Sites in Oman Land of Frankincense Sites Date of Inscription: 2000 Take A Look Bahla Fort Date of Inscription: 1987 Take A Look Ancient City of Qalhat Date of Inscription: 2018 Take A Look Bat, Al-Khutm and Al-Ayn Archaeological Sites Date of Inscription: 1988 Take A Look Aflaj Irrigation Systems of Oman Date of Inscription: 2006 Take A Look