There is a roadway called Lagoon Drive by the Honolulu International Airport. Here is the view of Downtown and Waikiki (Vaikiki):
There are many suburban neighborhoods that sprawl on the Ko'olau (Ko'orau) Mountains. I did not make them in game because it's difficult to do them, especially if they're on city tile borders.
Kapalama (Kajarapa) Heights is up in the hills above my house:
Looking west toward the airport:
Liliha (Ririta) is located in the top left corner of the following in-game picture:
I went to a park up there sometime ago and I marvelled at the view from there:
The Manoa (Panoa) Valley:
Tantalus is the highest point you can drive in town. Here's the view of the Manoa Valley, the University of Hawai'i, Diamond Head, and Waikiki.
St. Louis Heights is east of Manoa and is another mountain neighborhood that I haven't built yet in the region. I stumbled upon this view one day when I took a wrong turn going home:
Kaimuki (Kaipuki) is made up of a large grid of streets, but it's quite hilly:
Next week, we'll travel over the mountains to the windward side of the island.