The Thasian Statue

The Thasian Statue was a virtual representation of one of Kassandra's genetic memories, relived by Layla Hassan through the Portable Animus HR-8.5.

Description
Another statue on the list, said Phidias, would point Kassandra to Thasos. There she'd find the hidden symbol on the Statue of Theagenes.

Reference

 * Assassin's Creed: Odyssey