The Friday Mosque of Al-Qasr
The 12th century Nasr el-Din Mosque is clearly the most known building of Dakhla, but it is most impressive when seen from a distance, when the town lies clearly beneath it, and with the pink mountains in the behind.
The 21 metre high minaret is in fine condition, even if much of two wooden terraces have been dismantled after the mosque lost its functions. It's pepperpot finial is typical of Ayyubid architecture.
The interior is quite simple, but decorations are charming, which should be clear from the two photos.