Oahu is known by many travelers as the "Gathering Place," and as the most populous island in Hawaii, it's clear that the name is truly filling. Oahu is a favorite island for travelers because it offers a little bit of everything. From the densely populated urban area of Honolulu to scenic hiking trails and of course, fantastic beaches, you can do anything and everything on Oahu. Travelers should take a couple of days to explore and experience the island. Notable attractions on the island include the world-famous Waikiki, Pearl Harbor, Iolani Place, and the big waves on the North Shore.