On the Road to Hana, is Hawaii’s oldest remaining structure – the temple called Piilanihale Heiau.  In ancient Hawaii, a temple, or heiau, was place of peace and neutrality in times of war.  Built around 1200 A.D., this temple covers three acres of land and is believed by some archaeologists to be the oldest structure in the United States.  This is a must-see for history and archaeology buffs, as well as anyone interested in sites sacred to the Hawaiian people. Hana Picnic has more information and directions!