Lair of Romulus
The Lairs of Romulus are secret locations that are featured in Assassin's Creed: Brotherhood and act very similiarly to the secret locations from Assassin's Creed II. Like the latter, there are six lairs in total and completing each one will bring Ezio closer to gaining the Followers of Romulus' greatest prize, their secret armor. While going through the lairs, Ezio will learn more about this mysterious cult.
On the map of Rome, the locations of the Lairs of Romulus are marked by a Wolf Symbol.
Lairs and Locations
Palazzo Laterano - Inside one of the gardens.
Cloaca Maxima - Terme di Diocleziano (Note: Ezio must completely repair the Aqueduct which leads into the Terme. The water will fill up the terme, allowing access to the entrance.)Note-There is a way to enter without repairing the Aqueduct.
Catacombe di Roma - Near the Pyramid of Cestius.
Terme di Traiano (Note: This lair is not optional, as Ezio needs to go through the lair in a Core Memory.)
Colosseo - Ground level between the inner and outer walls.
Basilica di San Pietro - Outside, near the staircase which leads to the inner garden.