Nabatean architecture (Arabic: اَلْعِمَارَةُ النَّبَطِيَّةُ; al-ʿimarah al-nabatiyyah) refers to the building traditions of the Nabateans (/ˌnæbəˈtiːənz/; Nabataean Aramaic: 𐢕𐢃𐢋𐢈 Nabāṭū; Arabic: ٱلْأَنْبَاط al-ʾAnbāṭ; compare Akkadian: 𒈾𒁀𒌅 Nabātu; Ancient Greek: Ναβαταῖος; Latin: Nabataeus), an ancient Arab people who inhabited northern Arabia and the southern Levant. Their settlements—most prominently the assumed capital city of Raqmu (present-day Petra, Jordan)—gave the name Nabatene (Ancient Greek: Ναβατηνή, Nabatēnḗ) to the Arabian borderland that stretched from the Euphrates to the Red Sea. Their architectural style is notable for its temples and tombs, most famously the ones found in Petra. The style appears to be a mix of Mesopotamian, Phoenician and Hellenistic influences modified to suit the Arab architectural taste. 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. 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. The accomplishments the Nabateans had with hydraulic technology forged the power and the increase of the standard of living of the residents living in the capital of the ancient Nabataean kingdom.