This is the Eternal Flame of Peace (I think). It's a metal sculpture by a Greek-American artist. On the grass are some solar cells. There are no transmission lines in the island. Electricity is from generators or photovoltaics. The street lamps also have PV cells attached to it (which was cool for me - first time that I've seen those in actual, and not in pics).
The dome of the memorial was just a few meters away. We walked towards it.