What is the name of the Assassin Brotherhood's headquarters in Assassin's Creed Syndicate?

The Train Hideout is the Assassin Brotherhood's mobile headquarters in Assassin's Creed Syndicate.

The hideout is a train called the Rooks, which moves through Victorian London and acts as a base for Jacob and Evie Frye. The twins use it to plan operations, meet allies, manage upgrades, and travel between missions. Its mobility reflects the game's industrial setting and its focus on railways, factories, and rapid urban expansion.

Assassin's Creed Syndicate is set in London in 1868, during the Industrial Revolution. Jacob and Evie oppose the Templar-controlled criminal organization led by Crawford Starrick while building their own gang, the Rooks. The train therefore functions as both a practical headquarters and a symbol of the twins' challenge to Starrick's control of the city.

Earlier games use fixed bases such as the Villa Auditore in Monteriggioni and the Great Inagua hideout in Black Flag. Syndicate's moving train is one of the series' most distinctive headquarters, although the game also includes other properties and temporary locations.