Attica is a historical region of Greece, containing Athens, the current capital of Greece. The historical region is centered on the Attic peninsula, which projects into the Aegean Sea. There is a modern administrative region of Greece, Attica region, which is more extensive than the historical region, and includes several islands, and part of the Peloponnese.
The history of Attica is tightly linked with that of Athens, which from the Classical period onwards, was one of the most important cities in the ancient world.
According to Plato, Attica's ancient boundaries were fixed by the Isthmus, and in the direction of the continent they extended as far as the heights of Cithaeron and Parnes. The boundary line came down in the direction of the sea, having the district of Oropus on the right, and with the river Asopus as the limit on the left.