2 Best Sights in Big Island, Hawaii

It's thought that the first Polynesians came ashore at this southernmost point of land in the United States, also a National Historic Landmark, and today people travel here for the views and access to Green Sand Beach. Old canoe-mooring holes, still visible, were carved through the rocks, possibly by settlers from Tahiti as early as AD 750. To get here, drive 12 miles down the turnoff road, past rows of giant electricity-producing windmills powered by the nearly constant winds sweeping across this coastal plain. Bear left when the road forks, and park in the lot at the end. Walk past the boat hoists toward the little lighthouse. South Point is just past the lighthouse at the southernmost cliff. You may see brave locals jumping off the cliffs and then climbing up rusty old ladders, but swimming here is not recommended. Don't leave anything of value in your car. The area is isolated and without services. Green Sand Beach is a 40-minute hike down the coast.

One of the park's star attractions, the Thurston Lava Tube (named "Nahuku" in Hawaiian) spans 600 feet underground. The massive cavelike tube, discovered in 1913, was formed by hot molten lava traveling through the channel. To reach the entrance of the tube, visitors descend a series of stairs surrounded by lush foliage and the sounds of native birds. The Kilauea eruption of 2018 resulted in an almost two-year closure of the tube. During the closure, the drainage system was improved to reduce standing water on the cave’s floor, and electrical lines were replaced. Visitors should not touch the walls or delicate tree root systems that grow down through the ceiling. Parking is limited near the tube. If the lot is full, you can park at the Kilauea Iki Overlook parking lot, ½ mile away.