Cortesia de dormakaba
In medieval cities, walls played a crucial function, acting both as a defense against external threats and as a symbol of power and control, while also regulating local trade. The access to the interior of these cities was strictly controlled by guarded gates, drawbridges, and portcullises, ensuring the free flow of local residents and simultaneously obstructing travelers and potential invaders. While fortified towers and armed guards are now primarily associated with prisons, creating access conditions that promote security, reliability, and practicality remains a challenge for architects and designers, especially in complex infrastructure projects such as airports, hospitals, and educational centers.