Pisces

Pisces was a virtual representation of one of Arno Dorian's genetic memories, relived by a Helix initiate through the Helix Navigator.

Description
Arno solved several riddles to find a part of the Nostradamus Disc.

First riddle
On the hill of St. Genevieve, I have a Roman face. Clarion angels glide to A peak on my North side.

Second riddle
Like a halo you seek, Rings within rings High atop the edifice, The city lies below.

Third riddle
Pillars support my face, Hold the nation's dreams. Square, not round, they, Sit out of sight.

Fourth riddle
My purpose changed, I watch; high in the nace. As secular heroes enter, To replace those of Heaven.

Fifth riddle
The remains of fame, Lie amidst stale air. The most famous of all, The tomb of Voltaire.

Outcome
Arno retrieved one of the fragments of the Nostradamus Disc.

Reference

 * Assassin's Creed: Unity