One that I bookmarked in GE several years ago is
Ggantia
"Ggantija (Maltese pronunciation: [d?gan'ti?ja], "Giants' Tower") is a megalithic temple complex from the Neolithic on the Mediterranean island of Gozo. The Ggantija temples are the earliest of the Megalithic Temples of Malta. The Ggantija temples are older than the pyramids of Egypt. Their makers erected the two Ggantija temples during the Neolithic (c. 3600–2500 BCE), which makes these temples more than 5500 years old and the world's second oldest existing manmade religious structures after Göbekli Tepe. "