Kaloko-Honokōhau National Historical Park

Kaloko-Honokōhau National Historical Park preserves ~1,160 acres along ~3 miles of leeward shoreline immediately north of Kailua-Kona. Two ahupuaʻa preserved together (Kaloko, "the pond"; Honokōhau, "drawing-in bay") — the most complete pre-contact Hawaiian land-use system surviving in the Hawaiian Islands. Two principal fishponds: Kaloko Fishpond (loko kuapā / walled, ~12 acres, partially restored mākāhā sluice gate) and Aimakapā Fishpond (loko puʻuone / sand-barrier lagoon, ~15 acres). Heiau remains scattered across the park; petroglyphs in several locations; hōlua slide remnants (chiefly stone-paved sled track, same type as at Keauhou); pre-contact and early-contact salt-collection pans; ancient settlement remains (house platforms, walled compounds, agricultural features); coastal trail connecting features and Aiʻopio Beach (small protected pocket beach with calm wading and shallow swimming, sea turtle haul-out site). The fishpond engineering itself (mākāhā sluice gates, loko kuapā walled construction, loko puʻuone sand-barrier ponds, ʻamaʻama mullet and awa milkfish stocking) is fully treated at Kalāhuipuaʻa (the seven-pond complex with most intact working ponds). Kaloko-Honokōhau adds: most complete ahupuaʻa preservation in the islands; both fishpond types side by side in single visit; free NPS access (one of very few free NPS sites in Hawaiʻi). Active Hawaiian community partnership in restoration. The 1871 Trail at Puʻuhonua o Hōnaunau (~25 mi south) is part of the same Hawaiian coastal trail (ala loa) network preserved here. Free; open daily 8:30 AM – 4:00 PM (verify); visitor center, ranger programs; this is the northern neighbor of Kailua-Kona town — Kamakahonu within ~5 minute drive.