As the remains at Hagar Qim Temples suggest, this site is from 3600 – 3200 B.C., which is known as the Ggantija phase in local Prehistory. The site consists of a central building and the remains of at least two more structures. The large forecourt and the monumental facade of the central structure follow the pattern typical of Maltese Prehistoric Temples. Along the external wall one may find some of the largest megaliths used in the building of these structures, such as a 5.2m high stone and a huge megalith estimated to weigh close to 20 tonnes. Hagar Qim is one of the UNESCO World Heritage Site in the world.