The Ifugao rice terraces (IRT) was inscribed in the UNESCO World Heritage List in 1995 fulfilling criteria 3, 4, and 5. It "epitomize(s) the absolute blending of the physical, socio-cultural, economic, religious, and political environment, a living cultural landscape of unparalleled beauty." The sites are found in four municipal clusters: 1. Banaue- Batad and Bangaan; 2. Hungduan (entire municipality); 3. Kiangan (Nagacadan); 4. Mayoyao (central part) cluster. Since all its highland municipalities are peopled by Ifugaos- a rice terrace-building group- many areas are also in a list for possible inclusion in the heritage list.