Al-Ula includes unexplored human historical monuments that are more than 200,000 years old, as well as the ancient Nabataean city of “Al-Hijr”, which was registered as the first UNESCO World Heritage site in the Kingdom of Saudi Arabia, and the two archaeological kingdoms of Hayyan and Dadan whose texts discovered contributed to the development of the Arabic language, in addition to To "Old Al-Ula", which has been a resting point for pilgrims since 1100 AD.