It was an ancient city, near the Peneius River and on the Lethaeus River. It is mentioned in Homer as the Kingdom of Machaon and Podaleirius, sons of Aesculapius and physicians of the Greek army. It possessed the oldest known temple of Aesculapius, which was discovered in 1902, with a hospital for pilgrims. Tricca is mentioned by other writers. Tricca is attested as an episcopal see since antiquity.
- Homer. The Iliad, II, 729; IV, 202.