In the mountains north of Pearl Harbor, this state park protects Keaʻiwa Heiau, an ancient hoʻola (healing or medicinal) temple. Today people wishing to be cured may still place offerings here. The 4ft-high terraces are made of stacked rocks that enclose an approximately 16,000-sq-ft platform; the construction may date to the 16th century. The park includes the splendid ‘Aiea Loop Trail, which has lush views across Oʻahu.
To get here by car from Honolulu, take exit 13A ʻAiea off Hwy 78 onto Moanalua Rd. Turn right onto ʻAiea Heights Dr at the third traffic light. The road winds up through a residential area for over 2.5 miles to the park. From downtown Honolulu, bus 11 (ʻAiea Heights; 35 minutes, hourly) stops about 1.3 miles downhill from the park entrance.