The Academy (Ancient Greek: Ἀκαδημία) was founded by Plato in c. 387 BC in Athens. Aristotle studied there for twenty years (367–347 BC) before founding his own school, the Lyceum. The Academy persisted throughout the Hellenistic period as a skeptical school, until coming to an end after the death of Philo of Larissa in 83 BC. The Platonic Academy was destroyed by the Roman dictator Sulla in 86 BC. History The Akademia was a school outside the city walls of ancient Athens. It was located in or beside a grove of olive trees dedicated to the goddess Athena, which was on the site even before Cimon enclosed the precincts with a wall, and was called Academia after its original owner, an Attic hero in Greek mythology. Academus was said to have saved Athens from attack by Sparta, revealing where Helen of Troy was hidden, when she had been kidnapped by King Theseus years before the incidents of the later Trojan War. Having thus spared Athens a war (or at least delayed it), Academus was seen as a savior of Athens. His land, six stadia (a total of about one kilometer, or a half mile, the exact length of a stadion varied) north of Athens, became revered even by neighboring city-states, escaping destruction during the many local wars. The site of the Academy was sacred to Athena; it had sheltered her religious cult since the Bronze Age. The site was perhaps also associated with the twin hero-gods Castor and Polydeuces (the Dioscuri), since the hero Akademos associated with the site was credited with revealing to the brothers where the abductor Theseus had hidden their sister Helen. Out of respect for its long tradition and its association with the Dioscuri – who were patron gods of Sparta – the Spartan army would not ravage these original "groves of Academe" when they invaded Attica. Their piety was not shared by the Roman Sulla, who had the sacred olive trees of Athena cut down in 86 BC to build siege engines. Among the religious observances that took place at the Akademeia was a torchlit night race from altars within the city to Prometheus' altar in the Akademeia. The road to Akademeia was lined with the gravestones of Athenians, and funeral games also took place in the area as well as a Dionysiac procession from Athens to the Hekademeia and then back to the city.