Aug. 20 (UPI) — The FBI headquarters in Washington, D.C., has added artifacts from the 2001 9/11 terror attacks on the Twin Towers in New York City and the Pentagon to its The FBI Experience tour.

The FBI invites the public to tour the exhibit and added the 9/11 artifacts ahead of the 24th anniversary of the terror attacks that killed 2,976 and injured thousands more.

“I wish everybody could visit The FBI Experience to learn more about this great agency and the people who are dedicated to making America safe,” FBI Director Kash Patel said in a news release on Wednesday.

“I especially encourage teachers to add The FBI Experience to any field trip to the nation’s capital,” Patel added.

The exhibit highlights the FBI’s 117-year history and contains many interactive multimedia exhibits, artifacts and displays that explain FBI operations.

Those operations include the 9/11 investigations in the United States and overseas to identify and hold accountable those who carried out the terrorist attacks.

Al Qaeda-led terrorists hijacked four commercial airliners shortly after each took off and had full fuel tanks.

Terrorists crashed two airliners into the World Trade Center in lower Manhattan and one into the Pentagon in 2001.

Passengers overwhelmed most of the hijackers on a fourth airliner, which crashed into an empty field in Pennsylvania.

The FBI exhibit includes a limestone slab from the damaged Pentagon building, materials recovered from the three crash sites, and equipment used during the 2011 raid that killed former Al-Qaeda leader Osama bin Laden at a compound in Abbottabad, Pakistan.

Those who don’t plan to visit Washington can view exhibit materials online.

The FBI headquarters is located at 935 Pennsylvania Ave. N.W. in Washington.

The FBI Experience tours are available Monday through Friday from 9 a.m. to 2 p.m. local time.

Tours must be booked in advance and are available for large groups, including student groups.