Located in the south of the country, Attica covers about 3,808 square kilometers. In addition to Athens, it contains within its area the cities of Peiraeus, Eleusis, Megara, Laurium, and Marathon, as well as a small part of the Peloponnese peninsula and the islands of Salamis, Aegina, Poros, Hydra, Spetses, Kythira, and Antikythera. About 3,750,000 people live in the periphery, of which more than 95% are inhabitants of the Athens metropolitan area. Athens was originally the capital of Central Greece.