Tiber Island headquarters

The Tiber Island headquarters was a building located on Tiber Island in Rome, and acted as the base of the Assassin Order following the destruction of the Villa Auditore in Monteriggioni. Originally a storage facility owned by the Orsini family, control of the building was handed over to the Assassins by Fabio Orsini in 1500, so as to allow the Order to establish a foothold in Rome.

Function
The headquarters could be found in the basement of the island's largest structure, and was accessible from the rooftop, the street, the river, and the tunnels.

Function-wise, it was similar to the Villa Auditore, with a few additional features. Its rooms included an Armory that displayed armor sets and weapons, a painting gallery that showcased purchased paintings and the portraits of fallen targets, and a ceremonial hall that was used to induct the Assassin recruits into the Order and grant them the rank of Assassino. A view point on the roof was used for the initiation Leap of Faith performed by the recruits.

The appropriate guild's crest will appear on the wall near the fireplace upon completion of any of the five Guild Challenges, and are labeled to have been awarded to Ezio by the other Assassins in tribute to his skill.

Any recruits of the Order can often be seen milling around or speaking to each other in the rooms of the guild when not out on missions.

Interestingly, all the plain red banners around the headquarters are in good condition, but the banners that show the Assassin insignia appear to be tattered and worn. Similar banners with the insignia were also present in the Villa Auditore.

Entrances
There were a total of eight entrances to the Tiber Island headquarters: the street entrance, rooftop entrance, tunnel entrance and river entrance.

Street entrance: The street entrance was located at the south-west corner of the building, inside a brief tunelled enclosure.

Rooftop entrance: The rooftop entrance was located at the upper most point of the building. It was north-east facing, opposite an affiliated viewpoint.

Tunnel entrance: The tunnel entrance could be accessed from any of the other 18 tunnel entrances scattered around Rome at the time.

River entrance: There were four different river entrances scattered around Tiber Island.

Main Hall
The main hall was the focal point of the headquarters' interior. It housed entrances to all the other rooms, held a guild management area, a guild ranking board and once recruited, a total of three apprentices accumulated here

Armory
The armory was located to the east of the main hall. The four guild crests were displayed here as a tribute to Ezio's skill, once the corresponding challenges had been completed. Along the eastern side of the armory were the armor sets purchased or unlocked by Ezio. There were five in total; The Roman armor set, the Rondelle armor set, the Plate armor set, the Seusenhofer armor set and the Armor of Brutus. The last remaining scale models of Leonardo da Vinci's war machines were also on display here, the chariot machine gun, the naval cannon, the bomber and the tank. One recruit could be found here browsing through a book shelf.

Weapon Hall
The weapon hall was located on the opposite side of the main hall. It held a feather chest, for the ten feathers located around Rome, and the entirety of Ezio's purchased and unlocked weaponry. There were a total of three weapon racks, two heavy weapon racks and two small weapon stands.

Weapon rack #1

 * Common sword
 * Sicilian Rapier
 * Captain's sword
 * Old Syrian sword
 * Milanese sword

Weapon rack #2

 * Sword of Altaïr
 * Roman Longsword
 * Venetian Falchion
 * La Volpe's Bite
 * Schiavona

Weapon rack #3

 * Mercenario War Hammer
 * Cavalieri Mace
 * Lucerne Hammer
 * Condottiero Mace
 * Condottiero War Hammer

Heavy weapon rack #1

 * Bearded Axe
 * Bastard sword
 * Spada Lunga

Heavy weapon rack #2

 * Bartolomeo's Axe
 * Stocco
 * Spadone

Small weapon rack #1

 * Knife
 * Butcher Knife
 * Maria's Dagger
 * Stiletto

Small weapon rack #2

 * Dagger of Brutus
 * Dagger
 * Bone Dagger of Romulus
 * Notched Cinquedea

Appearances

 * Assassin's Creed: Brotherhood
 * Assassin's Creed: Brotherhood novel