Seventh anniversary of 9/11 (BBC News)

Today is Patriot Day in the United States of America.

You were very young in September 2001...and you probably can't remember what happened in New-York on 11th September...Two hijacked planes crashed onto the World Trade Center (The Twin Towers) in New-York. Click here to watch and read what happened on that day.

"Rebuilding work continues on the site of the 9/11 attacks in New York seven years ago on Thursday.

Laura Trevelyan reports from Ground Zero". Click on the picture below.