The northeastern slope of the Pnyks Hill forms a natural amphitheater, where set-sound performances take place. It was in this place that the Ecclesia, the People's Assembly, the highest institution of Athenian democracy, took place. It was the heart of Athens. Politicians, speakers and ordinary citizens addressed the Assembly from the height of the rostrum, carved into the rock and still visible today. The quorum of the Assembly was 6,000 people. Laws were discussed and adopted here, unions were created, votes were held and fateful decisions were made for the country.