Hidden Histories is one of the "Discovery" side activities in Saints Row Reboot. To complete a given Hidden History, you must interact with the five information boards that are located nearby (Welcome Sign + 4 smaller information panels, the order in which you do it does not matter). The area in which they are located is defined by the yellow circle marked on the minimap.
You will receive 300 XP and $500 for completing each location. In addition, the Hidden Histories have been paired together. Completing both Hidden Histories from a pair will result in you receiving additional rewards - clothing items, a new vehicle or weapon.
