The "Tribute in Light" shined once again as a memorial to the victims in the terror attacks on Sept 11, 2001.

The display, marking 16 years since the attacks, consists of 88 7,000-watt lights set up on the roof of a parking garage near the Battery Park Tunnel - just blocks from where the World Trade Center's Twin Towers once stood.

The beams were first put in place six months after the attack, and are now a yearly tradition.

The Memorial Plaza - which houses a 9/11 memorial museum - is open to the public from 3pm to midnight for the viewing of Tribute in Light.

The installation can also be viewed from a 96km radius around Lower Manhattan.

Moments of silence were observed yesterday to mark when the World Trade Center towers fell, when the Pentagon was attacked and when the hijacked United Airlines Flight 93 crashed in Pennsylvania on the day 16 years ago, when 2,997 people died.