Matthew 24:1-2
Jesus left the temple and was going away, when his disciples came to point out to him the buildings of the temple. But he answered them, “You see all these, do you not? Truly, I say to you, there will not be left here one stone upon another, that will not be thrown down.”
That was the Temple itself.That pretty much got obliterated by Rome.
Thanks for the verse. It wasn’t until a few years ago when I found out that this wall was a retaining wall for the temple that I always had problems with that verse (and/or the wall!) “Hey, Jesus said none of the stones would be left on top of one another?” But, as you both point out, Jesus says “You SEE all these”, while pointing to the huge, magnificent (and relatively new) temple, which probably did not include the retaining wall.
What I find interesting is how the old “cement” or whatever the Jews used is working just fine, but the newer cement is junk. Of course the Jews had thousands of years to perfect there building technique in this climate.