View of Honolulu from Tantalus thanks to Oʻahu Photography Tours. (Which I give two thumbs up.)
Mental note for next trip anyway on my own? Look for photography or private tours of an area. Also write to friends in advance and extend the stay for as long as possible!
Hālona Blowhole. (Also a location for a scene in Jurassic World: Fallen Kingdom)
Wiki-movie-fact: This was the site of the love scene between Deborah Kerr and Burt Lancaster in the 1953 film From Here to Eternity. (It was also featured in some other movies and music videos, but let’s just keep it brief.)