3 – Diamond Head State Monument
The Diamond Head moment, which can be found in Waikiki, is one of Hawaii’s most well-known landmarks. According to Hawaii’s Official Tourism Site, the name came from the British who believed they found valuable diamonds in the crater. As it turns out, they were mistaken.
As popular as the Diamond Head State Monument is, this Oahu attraction isn’t right for everyone. A significant hike is required to get to the crater. This hike is perfect for those looking for adventure. The walk includes almost two hundred steps and mysterious underground tunnels.