Larissa (Greek: Λάρισσα) is the capital city of the Thessaly periphery of Greece, and capital of the Larissa Prefecture. Larissa is found in the north of the Thessaly plain near at the foot of the mountain Olympus. Its population is 131,496 inhabitants. Larissa is crossed by Pineios river. The most interest sight in Larissa is the ancient theater which is located in the center of the city.