The kingdom was separated into different duchies, which enjoyed a high degree of autonomy in relation to the central authority that was settled in Pavia.
Over time, the Lombards adopted Roman titles, as well as many Roman traditions.
In 1127, after a ten year war against Milan which caused the complete destruction of the city, Como lost its dominance, only to retrieve it again thanks to Frederick Barbarossa, Holy Roman Emperor.
Barbarossa rebuilt and enlarged the defensive walls which protected the city and also restored the Castel Baradello, a military fortification located on top of a hill of the Spina Verde Park.
Later on, the imposing towers of Porta Torre, San Vitale, and Porta Nuova were built to defend the main entrance of the city.