Walking northeast of the Stadium at the Archaeological Site after 500 meters you will find the Monument de Coubertin, where the heart of the philhellene Pierre de Coubertin rests.
Pierre de Frédy, Baron de Coubertin (1 January 1863 – 2 September 1937) was a French educator and historian. Founder of the International Olympic Committee, and its second President, he is considered one of the fathers of the modern Olympic Games. Born into a French aristocratic family, he became an academic and studied a broad range of topics, most notably education and history. He graduated with a degree in law and public affairs Paris Institute of Political Studies (Sciences Po). It was at Sciences Po that he came up with the idea of the Summer Olympic Games.
The International Olympic Committee awards the athletes who demonstrate the spirit of sportsmanship in the Olympic Games with the Pierre de Coubertin medal, also known as the Coubertin medal or the True Spirit of Sportsmanship medal.
After his death and following his last wish, his heart was transferred to Ancient Olympia, where he was buried in a tombstone named Coubertin Monument.
[Source: Wikipedia]