Generally Alaqsa Mosque is represented by Dom of the Rock (Masjid Al sakhra) that is factually incorrect. as it is a different mosque situated near the Masji Al-Aqsa.
Al Aqsa Mosque Close View:
As far as Masjid Alsakhra is concerned , also a sacred place for muslims and jews According to muslims’ religious beliefs regarding the rock at its heart rock; is the spot from where Muhammad ascended to Heaven accompanied by the angel Gabriel.
for details about masjid Al-sakhra please refer
Dome of the Rock - Wikipedia, the free encyclopedia
for Al- aqsa mosque: