Halkidiki is home to some of Greece's most important archaeological sites. Ancient Stagira, birthplace of Aristotle, offers stunning Aegean views. Petralona Cave (700,000 years old) houses Europe's oldest human remains. The mosaics of Ancient Olynthos are a unique example of classical art, while the Polygyros Archaeological Museum gathers finds from across Halkidiki. Don't miss the Nea Potidea canal, dating back to antiquity.