The National September 11 Memorial & Museum (also known as the 9/11 Memorial and 9/11 Memorial Museum) are the principal memorial and museum, respectively. They commemorate the September 11, 2001 attacks, which killed 2,977 victims, and the World Trade Center bombing of 1993, which killed six. The memorial is located at the World Trade Center site, the former location of the Twin Tower, which were destroyed during the September 11 attacks. It is operated by a non-profit corporation whose mission is to raise funds for, program, own, and operate the memorial and museum at the World Trade Center site.