Ancient Tritaia played an important role in the establishment of the Achaean League. It was one of the cities that pioneered its creation in order to escape from the hegemony of the Macedonians. It was a large shopping center during this era until the conquest of Greece by the Romans. The future course of the city is characterized by small flashes of short time, while in the Middle Ages and during the Turkish dominion was lost even as a place name. With the great fair of Vountouchlas which continues today, revives to its former glory. According to the description of Pausanias in his "Periegesis - Achaica" near the entrance of the town there was a marble funerary monument, remarkable for its colorful representations by the Athenian painter Nicias (4th century BC) who was co temporal to Praxiteles and sometimes collaborator. Regarding its name various versions exist: It came from the son of Poseidon Triton. Pausanias mentions in “Achaica” that "settler Tritaia was Kelvidas came from Kimi colony of Southern Italy”. Tritaia was decorated with several shrines and temples, and among them stood the temple of maximum Gods and the temple of Athena.