Yes, of course you are correct, Al Aqsa is a separate structure. But, if you look closely at the French photographer’s work, the building he has recorded is the Dome of the Rock. In the B&W photos, it looks different, because it does not have the characteristic copper/gold top.
It would appear that both Al Aksa and the Dome are mosques. What would they be, if not mosques?
Like you, indeed I noticed the weeds growing on the pavement. It evidently was not trodden by heaps of people at that time.
Wikipedia is your friend, sometimes.
Note that the Dome does not have an accompanying missile silo, traditional of all mosques I know of.
ML/NJ