Pyramids in Greece

Keros (; anciently, Keria or Kereia ()) is an uninhabited and unpopulated Greek island in the Cyclades about southeast of Naxos. Administratively it is part of the community of Koufonisia. It has an area of and its highest point is . It was an important site to the Cycladic civilization that flourished around 2500 BC. It is now forbidden to land on Keros.

pyramidal structure in Argolida, Greece