watch 02:34 Wiki Targeted (Games) Do you like this video? Play Sound Age of Empires, Researching Watch Tower makes the Watch Tower available for building. The research is done from the Granary and costs 50 Food. This option is available only from the Tool Age. Retrieved from "https://ageofempires.fandom.com/wiki/Research_Watch_Tower?oldid=225722" Categories: Age of Empires Tool Age Building technologies Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.