Stating the tour from Petra Visitors` Center. Obelisk Tomb and Bab as-Siq Triclinium :A beautiful monument and a perfect example of the artistic intermarriage of styles between East and West. The obelisk is obviously an Egyptian influence; the niche between the obelisks is a Graeco-Roman influence. The triclinium is a chamber with three benches, the purpose of which, being Nabataean, was the celebration of the sacred feasts, which took place every year in honour of the dead. As-Siq: The ancient main entrance to Petra. An impressive 1200 m long, deep and narrow gorge of stunning natural beauty. The Siq is hemmed in by cliffs soaring up to 80 meters. Suffice itto say that passing through it, one gets to see all the typical Petraean features, bizarre-looking geological formations, colorful rocks, agricultural terraces, waters channels cut into the cliffs, dams, and votive-niches carved into the rock. Al-Khazneh ( the "Treasury") : Just when you think you have seen enough dazzling sights in the Siq, emerging from it you suddenly come face to face with Al-Khazneh…the pride and joy of Petra and the most beautiful monument there. The architectural style of it was quite unique in the ancient world. Main inspiration was Helleistic, Alexandrian Hellenistic, plus that unique encompassing Nabataean artistic touch. On-looking tourists usually feel dwarfed by the huge size of the façade (30 m wide and 43 m high). It is truly breathtaking, so much so that no amount of descriptive prose does it justice, it is better-experienced first-hand. It was carved in the 1 st century BC as a tomb of an important Nabataean king; some scholars believe it was later used as a temple. The elaborately carved façade represents the Nabataean engineering genius. Street of Facades and the Theatre : Past Al-Khazneh and the adjacent Outer Siq, we come to the Street of Faces, rows of Nabataean tombs with intricate carvings. The theatre looks Roman but was executed by the Nabataeans in the 1 st century AD, as the shadow of Roman influence hung over the Near East. It is carved into solid rock except towards the front on either side, where part of it was built freestanding. Initially it could seat 3000 people, but was later extended to finally hold about 7000. Royal Tombs :The impressive Royal Tombs, before erosion took its toll on them, once rivaled Al-Khazneh in beauty and grandeur, carved to house the tombs of Nabataean dignitaries. Urn Tomb :The largest of the Royal Tombs, its immense courtyard and main chamber, 17 X18.9 m in size, are imposing. Believed to have been carved around 70 AD, it was altered in the mid-fifth century as it was reconsecrated to serve as a Byzantine church. Above the doorway are three chambers. A stone presumed to be depiction of the man buried inside blocks the central chamber. Palace Tomb : An exquisite carved monument has the appearance of a palace, hence the name. Badly eroded yet it still looks magnificent, composed of three levels, richly decorated with columns and pillars. Sextius Florentinus Tomb : The Latin inscription over the doorway makes it the only tomb in Petra we know for sure who it was built for. Sextius was the Roman governor of the province of Arabia and, as the inscription tells us, wished to be buried in Petra. His elaborate tomb was carved around 126-130 AD Colonnaded Street : A beautiful colonnaded street, which led through the city centre, flanked by temples, public buildings and shops. A nymphaeum once adorned the street, the marble pavement still visible today. Qasr al-Bint : Probably the main temple of the Nabataean capital, it is the only freestanding building in Petra to have survived centuries of earthquakes and floods. Its solid-looking silhouette dominates a large paved holy precinct (Greek:temenos), which was open to common worshippers, while the temple itself and the altar in front of it were the realm of the priests