King Abdulaziz Air Base — Dhahran, Saudi Arabia

Oil built this stretch of Saudi Arabia's Eastern Province, and DHA has long been intertwined with that history, originating as the region's primary airfield back when Dhahran served as headquarters for the operations that grew into Saudi Aramco. The base carries the name of King Abdulaziz, the founding monarch of modern Saudi Arabia, and today functions mainly as a military installation for the Royal Saudi Air Force, though limited civilian and government flights have used the field at various points. Commercial passenger traffic for the wider Dammam metropolitan area shifted decisively to the newer King Fahd International Airport after it opened in the late 1990s, reducing DHA's everyday civil aviation role. The surrounding area remains central to Saudi Arabia's petroleum industry, with major processing and administrative facilities located nearby.