Road Map of Oahu, Hawaii. On first trip maybe take a guided tour, but on a second trip to Oahu I highly recommend renting a car and going around the whole island. Don't forget to stop for some famous shaved ice.
Manoa Falls Trail hike: Waterfalls in Oahu with one of best waterfall hikes in Hawaii. US hiking trails in Hawaii, tons of hikes on Hawaii vacation, a few Oahu waterfall hikes too. Manoa Falls is near Honolulu and Waikiki, and some people go swimming.