Monte d'Accoddi
Sardinia, Italy
Prehistoric altar / step pyramid. Height: 10 m. Date: 4th–3rd millennium BCE (first sanctuary c. 4000–3500 BCE; great altar c. 3550–2900 BCE).
Pre-Nuragic ceremonial altar. A monument with no parallel in Sardinia or the Mediterranean, compared by archaeologists to a Mesopotamian ziggurat.