Keahua Arboretum

Sitting prettily at the top of Kuamoʻo Rd around seven miles from Wailua, this arboretum has grassy fields, a gurgling stream and groves of rainbow eucalyptus and other towering trees. Locals come here to picnic and to swim in the freshwater stream and pools, but be aware that the water is infected with leptospira bacteria which can cause potentially serious infections.