Polynesian porches, also known as LANAI, are open-air verandas or balconies that are typically found in tropical climates. They are usually made of wood and are used to provide shade and protection from the elements. The term 'LANAI' is derived from the Hawaiian word for porch. Polynesian porches are popular in Hawaii, where they are often used to enjoy the outdoors while still being protected from the sun and rain.