Al-`Ula

From an archaeological perspective, the immediate vicinity contains a unique concentration of precious artifacts, including well-preserved ancient stone inscriptions that illustrate the development of the Arabic language, and a concentration of rock dwellings and tombs that date from the Nabatean and Dedanite periods that coincided with Greco-Roman influence during classical antiquity. Saudi Arabia's first UNESCO World Heritage Site, Hegra, is located 22 km (14 miles) north of the city, in al-Ula governorate. Built more than 2,000 years ago by the Nabataeans, Hegra is often compared with its sister city of Petra, in Jordan. Meanwhile, the ancient walled oasis city of al-Ula, locally known as al-Dirah, situated near the oasis's palm grove that allowed for its settlement, contains a dense cluster of mudbrick and stone houses. al-Ula was also the capital of the ancient Lihyanites (Dedanites).