Madain Salih, also known as Al-Hijr, is an ancient archaeological site located in northwestern Saudi Arabia. It was the first UNESCO World Heritage Site in the country, recognized for its well-preserved rock-cut tombs and monumental architecture, dating back to the Nabatean civilization around the 1st century AD. The site features over 130 tombs, many adorned with intricate carvings and inscriptions. Madain Salih served as a vital trading hub along the ancient incense route, connecting the Arabian Peninsula to the Mediterranean. Today, it attracts tourists and researchers interested in its historical and cultural significance.