Megaliths on the earth seem to be related to each other, built along a "grid" composed of two pentagrams within the circle of the equator. All the monuments fall into place along this grid if one pentagram is "anchored" at Giza & one at the Prime Meridian 0 longitude. Too many major architectural structures exist along this dual-pentagram design for it to be mere coincidence. This design predicts where megalithic structures will be found, as well.
The 13th century Kisimul Castle, Island of Barra, Outer Hebredes, Scotland. Seat of the Clan MacNeil, Chief of Clan MacNeil taught in the US and had Barack Obama in one of his classes. He predicted that he would be the first black president of the US, he was proved right!