Tarxien Temple

The Megalithic Temples of Malta are the oldest free-standing structures on Earth.^{[dubious – discuss]} Eleven prehistoric monuments, of which seven are UNESCO World Heritage Sites, were built during three distinct time periods between 5000BC and 700BC approximately.^[2] Archaeologists believe that these megalithic complexes are the result of local innovations in a process of cultural evolution.^[3][4] This led to the building of several temples of the Ġgantija phase (3600-3000 BC), culminating in the large Tarxien temple complex, which remained in use until 2500 BC. After this date, the temple building culture disappeared.^[5][6]

• http://en.wikipedia.org/wiki/Megalithic Temples of Malta