A self-guided, 1-mi walking tour leads through the ruins of the once-prosperous fishing village Koai'e, which dates as far back as the 15th century. Displays illustrate early Hawaiian fishing and farming techniques, salt gathering, games, and legends. A park guide is often on-site to answer questions. Since the shoreline near the state park is an officially designated Marine Life Conservation District, and part of the site itself is considered sacred, swimming is discouraged. For some reason a distinction is made between swimming and snorkeling; the latter is allowed and superb. Open daily 8-4.