Philadelphia is the most important city in the United States. The famous Independence Palace is here. The battleship New Jersey was launched into the Pacific in 1942, and served in World War II, South Korea, Vietnam, and Middle East peacekeeping. Retired in 1991, now moored on the other side of the Delaware River, Camden, New Jersey, for visitors to visit. In addition to the general ship tour, the battleship has a number of colorful and unique activities: 4D flight simulator, personally experience the tragic scene of the battle of Iwo Jima in World War II.