Like other areas, two heiau at Kaupō stand out for their massive size and labor invested in their construction, Lo‘alo‘a and Kou. Lo‘alo‘a Heiau seems to have been situated on the edge of a dense part of the field system and overlooks Manawainui Stream. Lo‘alo‘a Heiau is one of the largest on Maui and indeed in the entire archipelago and is associated in Hawaiian traditions with King Kekaulike, who ruled Maui in the 1700s.

Dating suggests that the earliest stages of construction date to 1440–1660. Lo‘alo‘a, like many large structures, has a complex construction sequence, and Kekaulike would have rebuilt and rededicated a previously existing structure in the early 1700s. It was during the subsequent reign of Kekaulike’s son, Kahekili, that vast changes occurred in Maui society and social organizational changes were instituted.