What is Hawaii's landmark?

Hawai'i has several landmarks, the most famous would be the Diamond Head Crater.

Some other ones are: Aloha Tower, the King Kamehameha Statues (found in Kohala and Hilo on the Big Island and downtown Honolulu), 'Iolani Palace, the Arizona Memorial, The Royal Hawaiian Hotel and Shopping Center, Mauna Kea and Mauna Loa, Haleakala, Kilauea (active Volcano located on the Big Island), Halema'uma'u Crater, etc.