The central location for the Twi'lek Clan Assembly was the Assembly building. This structure was situated in Lessu, the principal city and capital of the Twi'lek's native homeworld, Ryloth.
The audio drama The High Republic: Tempest Runner, from 2021, featured a reference to the Assembly building in a flashback. This audio drama was penned by Cavan Scott and brought to life by a complete ensemble of voice actors.