The ascent includes steep stairs and tunnels, leading to a summit with panoramic vistas of Waikiki and beyond. Originally used as a military lookout, Diamond Head is now a protected state monument with historical bunkers and observation points along the trail. The hike typically takes about 1.5 to 2 hours, making it a great outdoor activity for adventure seekers. Visitors are encouraged to bring water, wear comfortable shoes, and start early to avoid the midday heat. A visit to Diamond Head offers a perfect mix of history, nature, and stunning scenery, making it a must-see attraction for anyone exploring Oahu.