Dominus Flevit, which translates from Latin as “The Lord Wept”, was fashioned in the shape of a teardrop to symbolize the tears of Christ. Here, according to the 19th chapter of the Gospel of Luke, Jesus, while walking toward the city of Jerusalem, becomes overwhelmed by the beauty of the Second Temple and predicting its future destruction, and the diaspora of the Jewish people, weeps openly. (Luke 19:37-42)
One of the newest churches in Jerusalem, Dominus Flevit sits atop an ancient site. During construction of the sanctuary archaeologists uncovered artifacts dating back to the Canaanite period, as well as tombs from both the Second Temple and Byzantine eras.
The site of Christ’s weeping was unmarked until the Crusader era. It was during this time that people began commemorating the site. Eventually a small chapel was built there. After the fall of Jerusalem in 1187, the church fell into ruin. In the early sixteenth century a mosque or madrasah existed at the site, presumably built by the Turks, from the remains of the earlier church, although the exact use is disputed. This place was known as el Mansouriyeh (The Triumphant) and also el Khelweh (The Hermitage).
source : Wikipedia