You'll pass through some fields still planted with pineapple for the Dole Corporation. Along the way you can stop at the Dole Plantation Visitor Center where you can sample many pineapple treats, purchase lots of souvenirs and even try to make your way through the world's largest maze.
The road south takes you past much of Hawaii's military history including Schofield Barracks, considered by many to be the most beautiful military base in the world.
As you reach the end of H2 you will find yourself near Pearl Harbor. A visit to Pearl Harbor requires at least a half day, or more, if you intend to visit all of the sites.
Pearl Harbor is home to the USS Arizona Visitors Center and the USS Arizona Memorial, the USS Bowfin Submarine Museum & Park and the USS Battleship Missouri Memorial.
I suggest you read our related feature Visiting Pearl Harbor and the USS Arizona Memorial.
We've now made our way around a big circle and arrived back in Honolulu. You certainly can't see all of these attractions in one day or even one trip. That's one of the reasons that so many tourists come back to Hawaii and and the island of Oʻahu again and again.
