What remains today are the astounding outer walls constructed in a zigzag formation on three levels.
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Grassy pathways run between the walls and are interrupted at intervals by towering stone doorways.
Above the walls are the circular foundations of three towers that once stood here.
It is easy to feel dwarfed standing next to the stones.
The biggest cornerstone stands 8.5 meters high.
The longest of three walls is about 400 meters and stand 6 meters tall.
A single boulder is estimated to weight between 120 to 200 tonnes.
However, new investigation suggest that it could have been a temple devoted to the worship of the Sun.
Today, only the stones that were too large to be moved remain at the site.
