Tourists walk Monday around the historic archeological site of Mada'in Saleh, 20 km north of the Al-Ula town in the northwest of the Kingdom, 400 km from Madina. The archeological vestiges of Mada'in Saleh are often compared with those of Petra in Jordan, the Nabatean capital. The extensive settlement of the site took place during the 1st century CE, when it came under the rule of the Nabatean king Al-Harith IV (9 BCE –40 CE), who made Mada'in Saleh the kingdom's second capital, after Petra in the north.
