Areopagus

The Areopagus (/ˌæriˈɒpəɡəs/) is a prominent rock outcropping located northwest of the Acropolis in Athens, Greece. Its English name is the composite form of the Greek name Areios Pagos, translated "Ares Rock" (Ancient Greek: Ἄρειος Πάγος). In classical times, it functioned as the court for trying deliberate homicide. Ares was supposed to have been tried here by the gods for the murder of Poseidon's son Halirrhothius (a typical example of an aetiological myth).

The origin of its name is not clear. In Ancient Greek, πάγος pagos means "big piece of rock". Areios could have come from Ares or from the Erinyes, as on its foot was erected a temple dedicated to the Erinyes where murderers used to find shelter so as not to face the consequences of their actions. Later, the Romans referred to the rocky hill as "Mars Hill", after Mars, the Roman God of War. Near the Areopagus was also constructed the basilica of Dionysius Areopagites.

In pre-classical times (before the 5th century BC), the Areopagus was the council of elders of the city, similar to the Roman Senate. Like the Senate, its membership was restricted to those who had held high public office, in this case that of Archon. In 594 BC, the Areopagus agreed to hand over its functions to Solon for reform. He instituted democratic reforms, reconstituted its membership and returned control to the organization.

...
Wikipedia