The tower of Siloam was a large building that collapsed, killing 18 people. Jesus compared those killed by the fallen tower to the rest of the people living in Jerusalem (Luke 13:4–5).
Nothing is known of this tower other than it was probably in Jerusalem. It might be the great tower built by Nehemiah on the wall of Ophel (2 Chronicles 27:3; Nehemiah 3:26–27). It might also be one of the towers built on the wall of Jerusalem near the pool of Siloam.
See also Jerusalem.