Stagira is a modern city.
Stagira ( [ stəˈdʒaɪrə ] ) , Stagirus ( [ stəˈdʒaɪrəs ] ) , or Stageira ( Στάγειρα or Στάγειρος ) was an ancient Greek city , located in central Macedonia , near the eastern coast of the peninsula of Chalkidice , and is chiefly known for being the birthplace of Aristotle , who was a Greek philosopher and polymath , a student of Plato and teacher of Alexander the Great .