Latest researches made in Platform IV of the Ceremonial Center of Pucllana, demonstrated an architectonic sequence corresponding to the time 1A of the Middle Horizon. Such evidences were superposed by architecture corresponding to the following time 1B, register significant changes in the configuration of the spaces in the defined constructive stages. Recovered Nievería style sherds were associated to the architectonic development of this platform in its delayed phases, these pieces also indicated eminent innovations in the decoration, showing also changes at ideological-political level in the Lima culture. The evidences reveal that there was a permanent occupation in the Urban Center of Pucllana during the two first times of the Middle Horizon. Also, the architectonic sequence in its delayed stage was characterized by the loss of the ceremonial features and the arrangement of spaces of...