Tribute in Light rises in New York to mark 9/11 attacks

People mark 9/11 attacks across U.S.

London commemorates UK victims in 9/11 attacks

Artist feels honored to have anniversary exhibit

People mark 9/11 attacks in US embassy in Beijing

10th anniversary of Sept. 11 attacks marked in U.S. cities

Take a glance at the North and South Pool at WTC site

"Tribute in Lights" illuminated in NYC skyline at night