🇸🇦 Saudi Arabia · Hydraulic works
Ayn Zubaydah Aqueduct (Zubaydah Spring Canal to Makkah)
Early Abbasid (Harun al-Rashid–Al-Amin) · Abbasid (Zubaydah bint Ja'far patronage)
Ayn Zubaydah: 35-km Abbasid 809 CE spring aqueduct from Wadi Nu'man to Haram, Makkah.