Hawaii draws thousands of tourists each year not only because of its pleasant climate but also because of its warm and friendly people – the Aloha spirit. Innumerable outdoor activities attract tourists from all over the world but it is primarily known as the birthplace of hula and surfing. Other than it lovely sunny beaches, Hawaii has some beautiful structures like the USS Arizona Memorial built over the remains of the sunken battleship USS Arizona, the final resting place for many of the 1,177 crewmen killed on December 7, 1941 when their ship was bombed by the Japanese Naval Forces. National Cemetery of the Pacific and the Bernice P. Bishop Museum in Honolulu are other important attractions. The Hawaii Volcanoes National Park reflects 70 million years of volcanism, migration and evolution. The Polynesian Cultural Center in Laie showcases seven Polynesian cultures.