Part 25: Chronopolis - Chrono Cross Guide - IGN

Once everything is done, go to the Dead Sea Ruins (Home), and interact with one of the three glowing points in the water.

Part 06: Viper Manor (Another) - Chrono Cross Guide - IGN

Part 15: Party Recruit - Chrono Cross Guide - IGN

Part 04: Termina (Another) - Chrono Cross Guide - IGN

Part 17: The Einlanzer - Chrono Cross Guide - IGN

Chrono Cross Strategy Guide - IGNguides

Part 20: Viper Manor Revisited - Chrono Cross Guide - IGN

Part 25: Chronopolis - Chrono Cross Guide - IGN

Part 18: The Dead Sea - Chrono Cross Guide - IGN

Part 07: Guldove (Another) - Chrono Cross Guide - IGN

Part 15: Party Recruit - Chrono Cross Guide - IGN

Chrono Cross [Walkthroughs] - IGN

Part 25: Chronopolis - Chrono Cross Guide - IGN

Part 17: The Einlanzer - Chrono Cross Guide - IGN

Part 10: S.S. Invincible - Chrono Cross Guide - IGN

Part 25: Chronopolis - Chrono Cross Guide - IGN