The USS Arizona Memorial, at Pearl Harbor in Honolulu, Hawaii, marks the resting place of 1,102 of the 1,177 sailors and Marines killed on USS Arizona during the attack on Pearl Harbor on December 7, 1941, and commemorates the events of that day. The attack on Pearl Harbor led to the United States' involvement in World War II. The USS Arizona Memorial is one of several sites in Hawaii that are part of the Pearl Harbor National Memorial.