The trails at this sheltered 1,160-acre coastal park near Honokohau Harbor, just north of Kailua-Kona, are popular with walkers and hikers. The free park is a good place to observe Hawaiian archaeological history and intact ruins, including a heiau, house platforms, ancient fishponds, and numerous petroglyphs, along the newly installed boardwalk. The park's wetlands provide refuge to a number of waterbirds, including the endemic Hawaiian stilt and coot. Two beaches here are good for swimming, sunbathing, and sea turtle spotting: Aiopio, a few yards north of the harbor, is a small beach with calm, protected swimming areas (good for kids) near the archaeological site of Puu Oina heiau, while Honokohau Beach is a ¾-mile stretch with ruins of ancient fishponds, also north of the harbor. Of the park's three entrances, the middle one leads to a visitor center with helpful rangers and lots of information. To go directly to the beaches, take the harbor road past the Kona Sailing Club, park in the gravel lot, and walk the sandy path to the water.