PEARL HARBOR December 7, 2001 marks the 60th anniversary of the Japanese attack on Pearl Harbor and The United States' entry into World War II.  Pearl Harbor and the USS Arizona Memorial remain top tourist destinations in Hawaii with over 1,500,000 visitors annually. The addition of the Battleship Missouri [Image] and the 1999 opening of the USS Missouri Memorial has further enhanced the importance of this historic area.  The May 2001 release of the motion picture Pearl Harbor has resulted in an increase in visitors to Pearl Harbor. The best time of day to visit the Memorial remains early in the morning before the tour buses arrive. This is Pearl Parbor.