Okhdood archaeological site is one of the most important monuments and historical sites in Saudi Arabia. It consists of a castle built with stones and mud over 235-meter long and features a gate on its west side. Okhdood city is among the richest ancient sites in the Arabian Peninsula and most important cultural, tourism and historical landmark in Najran due to the presence of ancient engravings and inscriptions on the rock surfaces that date back to more than 1750 years.