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Overview	The Great Temple is now recognized to have been one of the main buildings of the ancient city of Petra. It seems probable that the ancient Nabataeans wished to compete with other city centers in the embellishment of their city. The building of a sacred precinct on the southern citadel hill of Petra was the result of that conscious choice. The intentional placement of the Great Temple on one of the highest points of the site while adapting it to the prevailing east-west topography of the valley and traffic of the city ensured its prominence and importance. The Great Temple stands approximately 25 meters (75 feet) above the Colonnaded Street. It occupied a visible focal point of the inner city and must have left the maximum visual impression on those who viewed it and worshipped in it. The temple is situated on the upper terrace or Upper Temenos of the Temple Precinct at approximately 884.40 m above sea level. It is oriented along a north-south axis with its facade facing north. The Upper Temenos was connected to the city below by a monumental staircase, the Propylaea Steps, which led from the Colonnaded Street to the Lower Temenos which in turn accessed the Upper Temenos by east and west stairways. The Lower Temenos is located at an average elevation of 878.50 m — a differential of some six meters exists between it and the Upper Temenos at 884.41 m. The Great Temple had a tetrastyle facade (four columns in the front) built above a low podium. The columns on the Temple facade had undergone severe weathering. In 1996 we removed their eroded drums and replaced them with column drums that now stand to average heights of 2.40 m (or 7 feet) above the level of the Temple Stylobate.
More (Link)	http://www.brown.edu/Departments/Anthropology/Petra/temple/great-temple.html