Puuhonua O Honaunau
This 180-acre National Historic Park was once a safe haven for women in times of war as well as for kapu (taboo) breakers, criminals, and prisoners of war—anyone who could get inside the 1,000-foot-long wall, which was 10 feet high and 17 feet thick, could avoid punishment. Hale-o-Keawe Heiau, built in 1650 as the burial place of King Kamehameha I's ancestor Keawe, has been restored. If this place doesn't give you "chicken skin" (goose bumps), nothing will. www.nps.gov/puho. COST: $5 per vehicle. OPEN: Park daily 7 am-8 pm; visitor center daily 8 am-5:30 pm.