Exploring Hawaii: Essential Things to Do On Oahu
11 Diamond Head
No trip to Oahu is complete without catching sight of and visiting the iconic Diamond Head State Monument. Over 1.2 million people paid the crater a visit in 2019. With the glittering Pacific in the background and views of Waikiki Beach and even Maui, the park makes for a stunning 1.6-mile summit hike that's about an hour long. Diamond Head is also known as Leahi for its fin-shaped ridgeline, but volcano experts refer to it as a tuff cone. The short hike isn't tough, provided you stick to the signposts and carry hydration. Go super early in the morning if you plan on parking.
History buffs should note that this landmark contains a bunch of hidden military tunnels from before World War I. Intriguing!
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