Bahla, Al Hamra / Sultanate of Oman - Jan 15th 2018: World Cultural Heritage site of Bahla Fort. Bahla Fort is one of four historic fortresses situated at the foot of the Djebel Akhdar highlands. Shutterstock Image - Bahla, Al Hamra / Sultanate of Oman - Jan 15th 2018: World Cultural Heritage site of Bahla Fort. Bahla Fort is one of four historic fortresses situated at the foot of the Djebel Akhdar highlands. - ID: 1045277998