There is more to Petra than its iconic Treasury building and the winding Siq leading to it. Known as the Vegas of its time, crowds still converge to marvel at the ancient tombs, temples, and churches. Through the ages, it has acquired a myriad of styles from it's many possessors: Nabatean, Greek, Roman and Byzantine, to name a few. Surprisingly only a small portion of Petra has been uncovered thus far. To properly see and appreciate Petra you need two full days. The entrance ticket can be purchased for 1, 2 or 3 days, best value is a three day pass. For those not staying overnight in Jordan the entrance ticket is the most expensive at 90JD. And, by the way, they don't take plastic. Take your time and explore. Hike the debated 850 steps in the morning to the Monastery building. The panoramic view on the top is breathtaking. Ancient steps framed with distant melted honeycombed sandstone canyons and juniper tree's just hanging onto the craggy cliffs. From there you can also see on a distant hill-top, Jabel Haroune, Moses' brother Aaron's tomb. Best time to visit is late in the day or early in the morning. I went in the off-season over Thanksgiving; the weather was great and we almost had the place to ourselves.