Petra, the Greek word for rock (hence the name of St. Petrus, whom Christ pronounced to be the rock upon which the Church will be built). In Jordan it refers to an archaeological site of a Nabataean city, including several buildings, all carved in the reddish stone of the Aqaba valley. The "Rose City" may be referred to in the Bible, and despite controversy about the exact dating, it is clearly ancient as well as spectacular.
Petra Jordan was declared a World Heritage Site almost 12 years ago (December 1985), and it is hardly unknown. Rather it is responsible to the largest touristic revenues in Jordan. The number of visitors is not limited, though the Middle East area is prone to political instability, a fact which influences the number of visitors.
As it is located in the Dead Sea area, it is literally in the middle of the desert, where climate is hot and dry throughout the year. It is probably better to plan a visit during March or October, though with proper planning anything is possible.
This is one of the most famous constructions in Petra, the monastery.