Those looking for extremes should head to Ka Lae, a rocky, wind-blown cliff that’s the southernmost point in the United States. Other attractions include wildlife refuges (like Hakalau Forest National Wildlife Refuge) and the Puʻukoholā Heiau National Historic Site. Here, you can find the remains of an ancient temple. And at the Ala Kahakai National Historic Trail, visitors can meander along a shoreline path created by ancient fishermen.