On the western slope of the Mount of Olives, Jesus; looking at Jerusalem, wept over the Holy City.  Tradition is that this happened in the section of the city today called "Dominus Flevit" ("The Lord Wept").

And when he was come near, he beheld the city, and wept over it, Saying If thou hadst known, even thou, at least in this thy day, the things which belong unto thy peace! but now they are hid from thine eyes.  For the days shall come upon thee, that thine enemies shall cast a trench about thee, and compass thee round, and keep thee in on every side, And shall lay thee even with the ground, and thy children within thee; and they shall not leave in thee one stone upon another; because thou knewest not the time of thy visitation."                  Luke 19:41-44