Φθίας is an ancient region in Greece, located in the southeastern part of Thessaly. It is known for its historical significance and connection to Greek mythology, particularly as the homeland of the hero Achilles. The area is characterized by its mountainous terrain and proximity to the Pagasetic Gulf. In mythology, Φθίας is often associated with the Myth of the Trojan War, where it played a crucial role as the base for the Greek forces. The region is also linked to the legendary figure Peleus, the father of Achilles, who was said to have ruled over Φθίας.