If ever on Oahu (where Honolulu is) be sure to take a day trip to the Windward side of the island, where the Seuf family lived from 1963 til 1966. At the time we left that summer, the H-3 highway was already on the drawing boards, but ended up being delayed for decades due to court challenges by not only environmentalists but also native Hawaiians, as the planned route traveresed sacred sites. The solution was to of course build the highway on stilts.
I can't take credit for this picture, but it shows the H-3 as it reaches the Windward portals of the tunnel-on the other side it's an easy 5 minute ride downhill to Aloha Stadium, which is right next to Pearl Harbor. This shot was taken from the infamous Haiku Staircase, which is an extremely scary climb to the top of the ridge.
The military established a communications post atop the ridge in WW2 (the Big One) and this was later taken over by the US Coast Guard as a radio navigation transmitter site. In fact, my Dad, who took over CG Engineering in the Pacific in the 1960s, got to travel up to the Haiku transmitter shack before the stairway was built. Back then, they used a crude cable car!