Walking tours are one of the great free things to do on Oahu. Tour Waikiki's historic trails to take in some rich Hawaiian culture and history, but you get to work on your tan and get a little exercise, too!

The Waikiki Historic Trail is one of Oahu’s most popular walking tours. It covers 23 amazing sites, most of which are marked by neat, informative, and colorful signs created out of surfboards.