Information is being updated as it becomes available. See an illustration of the North and South towers of the World Trade Center and the location of various tenants.

A memorable event in the life of the World Trade Center came in the summer of 1974 ... Petit and two friends slipped up to the top of the south tower, carrying their concealed equipment ...

Dirk Delph, 50, of East Flatbush, was at work at M.S. Farrell & Co. on 67 Wall Street when al-Qaeda hijackers crashed jets ...

These striking pools, each spanning roughly an acre, occupy the footprints of the former north and south towers of the World Trade Center and commemorate the thousands of lives lost during the ...