A new visitor center has been dedicated on a Pennsylvania hill overlooking the site where United Airlines Flight 93 came down during the 9/11 attacks.
The visitor center is at the Flight 93 National Memorial near Shanksville.
It uses photos, video, artifacts and interactive displays to tell the story of how passengers and crew fought to regain control of the plane.
The hijackers are believed to have wanted to crash it into the U.S. Capitol.
An outdoor platform offers a commanding view of the crash site where 33 passengers and seven crew members were killed.