Diamond Head State monument is a short .8mile hike to the top of Diamond head crater. The top lookout offers a beautiful view of Waikiki and Honolulu and on the east side are the views of Koko head. It's good to come here around 6am or you will find yourself surrounded by tourist. A popular tourist destination.
We did it in less than an hour so we felt like we need to do something else after this short hike so we decide to Hike Koko Crater.