Treasury of Atreus/Tomb of Agamemnon
This structure goes by both names, yet scholars doubt that it is either the site of a treasury or the tomb of the great King Agamemnon. More likely it was the final resting place of a lesser member of Greek royalty. Like the ancient tribes of England with their burial barrows, the Greeks first erected big mounds of earth then tunneled into them. They lined the passage way with huge stones then supported the tomb entrance with more stone. The doorway into the tomb was built before the invention of the arch. The lintel above the main doorway supports most of the weight but the triangular area above takes the weight above off the center of the door lintel. Grave robbers are believed to have stolen whatever decorative carvings (probably a stone lion) that were inserted in that triangular space.