The tower of Praxys is the oldest and tallest structure in Thylea. It is one of the few remaining landmarks from the time when gods walked among mortals, and the dragons and giants fought for primacy. Praxys serves as the throne of Sydon, the Lord of Storms (appendix A). He uses it as a guard tower to watch for incursions from the outer world. The Titan has modified and rebuilt the tower over many centuries, and thousands of cyclopes and gygan workers have died to fashion his “palace.”

Sydon is often found at Praxys, surrounded by his sons and daughters. Although Sydon and Lutheria have come to hate one another in recent centuries, the twins bore these Young Hyperion (appendix B) children together in anticipation of the end of the Oath of Peace (appendix D*,* The Great Labors). Sydon has trained them to reclaim the powers of the Five Gods.