The Agora was the central public space in ancient Greek city-states, surrounded by buildings where citizens would gather for commerce, worship, and government. A key architectural feature of the Agora was the Stoa, a colonnade that provided shade. The Greeks also built temples on the Acropolis and in the Agora, following standard architectural styles like the Doric order with thick columns. Over time, Greek architects refined temple designs to achieve ideal proportions, as seen in the Parthenon whose precise mathematical ratios created the illusion of perfection.