Mesopotamian, Phoenician and Hellenistic influences modified to suit the Arab architectural taste.[1] Petra, the capital of the kingdom of Nabatea, is as famous now as it was in the antiquity for its remarkable rock-cut tombs and temples. Most architectural Nabatean remains, dating from the 1st century BC to the 2nd century AD, are highly visible and well-preserved, with over 500 monuments in Petra, in modern-day Jordan, and 110 well preserved tombs set in the desert landscape of Hegra, now in modern-day Saudi Arabia.[2] Much of the surviving architecture was carved out of rock cliffs, hence the columns do not actually support anything but are used for purely ornamental purposes. In addition to the most famous sites in Petra, there are also Nabatean complexes at Obodas (Avdat) and residential complexes at Mampsis (Kurnub) and a religious site of et-Tannur.