Hijr ( Mada'in Salih ) was inscribed on the United Nations Educational, Scientific, and Cultural Organization ( UNESCO ) World Heritage List in 2008 as the first Saudi site to be registered. It was included due to its global historical significance, being the largest preserved site of the Nabataean civilization, located in the northwestern part of the Kingdom of Saudi Arabia . Hijr Site is rich in well-preserved archaeological evidence, including massive tombs with decorated facades dating...