Diamond Head

Hands-down the most popular hike on Oahu

From the smooth slope of its face to its pointed peak, Diamond Head's profile resembles the long brow of an ahi (yellowfin tuna) with its dorsil fin upright, and the Hawaiian name for the crater is Leahi, (lit. the forehead of the ahi). 

Sailors later mistook the calcite crystals in its sparkling sand for jewels and renamed it "Diamond Head." 

By any name this hike offers views of Waikiki to the west and the islands of Molokai, Lanai, and Maui to the east. 

Note: A reservation system is now in place to improve the visitor experience at this popular recreation site. All out-of-state visitors must have an advanced reservation to enter Diamond Head State Monument. Reservations may be made 14 days in advance. Hawaii residents can access the site for free without reservations, but entry depends on parking availability. For more details and to make reservations, visit the Hawaii State Parks System.

Open daily, 6 a.m. to 4 p.m.; gates close at 6 p.m.