Ok firstly, this is almost certainly not the actual grave of Agamemnon. Agamemnon was the king of Mycenae and is most famous for his role in the sacking of Troy told to us in the Iliad by Homer (a book you really should read – I recommend Lattimore or Lombardo’s translations). But it is undoubtably the tomb of a king, and probably a king that pre-dates Agamemnon.
The door to this tholos tomb (beehive tomb) measures over 5m tall, the lintel above the door, which weigh over 100tons each!
We will never know who was burried there, but it is a remarkable place to visit.