This famous landmark is a favorite of walkers and joggers. Diamond Head Lighthouse and Beach are not open to the public, but the views are outstanding. The extinct crater was once a fort reached through a tunnel.
The view of Waikiki and Honolulu is highlighted by board surfers and windsurfers below in the swells. It is a famous postcard view.
There is a tunnel off Monsarrat Ave that goes inside the crater. From there is a half hour hike to the top with the famous view. Admission is free and it is open daily 6am to 6pm.