In Assassin's Creed Unity, Arno's major home base after joining the Assassins is the Café Théâtre.
The Café Théâtre is a Parisian theater that Arno acquires and renovates during the campaign. It serves as a headquarters and a source of income, with improvements unlocking additional facilities and revenue. Players can also undertake cooperative and side activities connected with the building, making it a recurring part of Arno's life in revolutionary Paris.
The Café Théâtre should not be confused with the Assassin hideouts used during individual missions or with famous landmarks such as the Louvre and Notre-Dame. Unity is set during the French Revolution, beginning in 1789, and its fictional hero Arno Dorian becomes involved in the Brotherhood while investigating the death of his adoptive father.