French Polynesia/Tahiti: Arahurahu Marae
Marae is an ancient Polynesia temples that existed in many pacific islands for many centuries before European arrived and started building churches (quite often on the exact marae sites). The Arahurahu on the Tahiti island is partially restored and has several ceremonial rectangular platforms with a raised altar (occasional human sacrifices as well). Two stone statues of guardians Tiki meet the you at the entrance to the marae. Interestingly, I have seen similar but slightly different structures in Micronesia in northern pacific.