Acropolis

The first picture is taken from the marketplace (Agora) looking up toward the Acropolis where the temple of Athena (the Parthenon) was. This is to give you the perspective of the height.

The second picture is again from the homicide court (Areopagos) with the Acropolis behind it. So justice took place in the open above the marketplace but beneath the temple of Athens' patron deity.
The third picture is from the Assembly (the Pnyx). It is on a hill, again open to the public, about the same height as the homicide court and also overlooking the marketplace. It took 5000 citizens to have a quorum at the Assembly.