Te pongo enlaces a lugares y playas en la Isla de Oahu:
Honolulu:
Aparcamientos:
P1 Alii Place Parking Garage: 21.308481, -157.859948
P2 Harbor Court: 21.309510, -157.863795
P3 Oceanit Center Garage: 21.308540, -157.863708
Lugares a visitar: Aloha Tower, Ali’iolani Hale y estatua del rey Kamehameha I, Palacio 'Iolani, Capitolio de Hawaii, Kawaiaha’o Church, China Town, Cathedral of St. Andrew, Catedral de Nª Sª de la Paz
Playas:
Laniakea Beach 21.617906, -158.085980 (Tortugas)
Sharks Cove 21.650850, -158.061675
Turttle Beach 21.703294, -157.997238
Lanikai Beach 21.392406, -157.716437 (vimos alguna tortuga)
Aparcamientos para esta playa:
P1: 21.395177, -157.722541
P2: 21.396074, -157.726103
P3: 21.398250, -157.729261
Hanauma Bay 21.274218, -157.695405. Playa de pago y con reserva previa 2 días antes a las 07:00
Web: 
https://www.honolulu.gov/parks-hbay/home.html
Entrada: 
https://pros9.hnl.info/hanauma-bay
Waikiki Beach
Aparcamiento gratuito: 21.269540, -157.820484. Video en Youtube: 
https://www.youtube.com/watch?v=sMJTFFOJjTc
Aparcamiento de pago (43 USD al día): 21.274296, -157.821505. 
https://www.waikikibanyan.org/general-info/parking-information/
Lugares:
Mirador Tantalus 21.314049, -157.822199
Nuanuu Pali Lookout 21.366368, -157.793924
Pearl Harbor National Memorial 21.366563, -157.937718
Web: 
https://www.nps.gov/perl/index.htm
Entradas: 
https://www.recreation.gov/ticket/facility/233338
Aloha Stadium Swap Meet 21.371027, -157.931948
Manoa Falls 21.332877, -157.802333
Diamond Head 21.262994, -157.803796. 
Entradas: 
https://www.pacifichistoricparks.org/diamond-head-state-monument
Koko Crater Railway Trailhead 21.277580, -157.693674
Makapu'u Lookout 21.308142, -157.657281
Kualoa 21.520178, -157.835621
Señal Haleiwa 21.597681, -158.099461