In dark medieval times, every city had to defend itself. Buildings like Guard Tower enable soldiers to spot the enemy on time in order to make all necessary actions to properly prepare the city for attack. When the soldiers on the Guard Tower sound the alarm, town gates are being sealed and all who can fight equip themselves with weapons and readily await the battle to commence. Guard towers are built on the outskirts of a city, preferably on higher ground. These buildings have to be sturdy enough to withstand enemy’s cannon balls, stones thrown by catapults or even attacks by frenzied monsters such as Giants and Treeman. It has to be high enough so soldiers are able to see as much landscape as possible. Sometimes whole regiments of archers and other troops are stationed in one Guard Tower.

Medieval towers were defensive structures usually made of stone. Often they included battlements and arrow loops. Arrow loops were vertical slits in the wall where archers from the inside shot arrows through at the attackers, but made it extremely difficult for attackers to get many arrows back through at the defenders. A Battlement comprises a defensive low wall between chest-height and head-height, in which rectangular gaps or indentations occur at intervals to allow for the discharge of arrows or other missiles from within the defences. Towers can be stand alone structures or parts of defensive walls.