Hawaiʻi Volcanoes National Park
An absolute must. Drive the Crater Rim loop, walk through a lava tube, peer into the caldera of Kīlauea, and feel the raw power of the Earth’s geology in a way no textbook can convey. Kids are mesmerized.
Tip $30/vehicle entrance fee (7-day pass). The drive from Kona is about 2.5 hours each way — make a full day of it.