A city improvement exclusive to the Roving Clans obtained from the High Towers technology which is unlocked by completing Chapter 2 Part 1 of the Roving Clans faction quest. Constructing High Towers is required to complete Chapter 2 of the Roving Clans faction quest.
While a Wild Walkers hero with the Roads of Dust item must be the city's governor in order to construct it, they do not need to remain governor once construction is complete.
Lore[]
Expertise obtained from the Wild Walkers in matters of architecture and construction materials boosts Science, and the towers themselves increase Vision range.