Hawaiian heiaus are ancient temples built by the native Hawaiian people for religious and spiritual practices. These structures were often constructed in sacred locations and served as places of worship, where offerings were made to the gods and ancestors. Heiaus varied in size and design, reflecting the specific deities or purposes they were dedicated to. The construction of a heiau involved careful planning and the use of local materials, such as stone and wood. Many heiaus were associated with important cultural practices, including rituals related to agriculture, fishing, and healing. Today, these sites are recognized as significant cultural heritage landmarks in Hawaii.