The USS Arizona was sunk during the attack on Pearl Harbor. The Navy was unable to raise it and unable to recover many of the sailors that were on board when the ship went down. The consecrated it and left it as a place of remembrance where those who served aboard the ship could be commemorated. It is still leaking fuel, which can be smelled at the water’s surface. The visitors’ center, movie and tour of the Arizona are free. Read more about Pearl Harbor. For more on Oahu, click here.