A flight of 800 stairs cut into the rock takes you up the mountain of Ad-Deir, marvellous mountain scenes along the way up. And when you reach the top you will encounter Petra’s second most famed attraction… Ad-Deir. Huge in size yet beautifully awesome. The overall design resembles that of the Khazneh, but the architectural embellishment is simplified. Either tomb, temple or both – the Deir used to be an important pilgrimage site, the way up the mountain serving as processional route and the open area in front of the monument as gathering place. Later, in Byzantine time, it was probably used as a church.