http://agathe.gr/democracy/the_ten_new_tribes.html
The Ten New Tribes Kleisthenes instituted a crucial reform, the reorganization of the citizenry into new administrative units called phylai (tribes). In his attempt to break up the aristocratic power structure, ... Model of the Monument of the Eponymous Heroes in a 4th-century B.C. reconstruction. ... The Eponymous Heroes were Hippothoon, Antiochos, Aias, Leos, Erechtheus, Aigeus, Oineus, Akamas, Kekrops, and Pandion. ... Aerial view showing the foundations of the Monument of the Eponymous Heroes (center).