The Tower of Comares in danger of collapse. Affections in the most significant structure of the Alhambra during the sixteenth and seventeenth centuriesThis article develops a research on the outside layout of the Tower of Comares in the Alhambra (Granada), studying its transformations. It is focused on the interventions that took place at the most critical moment in its history. Between the last decades of the sixteenth century and the first ones of the seventeenth century, its general state of abandonment, the explosion of a nearby powder mill and the bad restauration practices applied in some cases, brought it to its structural limits, threatening its ruin. This process could fortunately be reversed after several technical reports on its injuries and actual conservation estate. If neglected, it would have led to the collapse of this paradigmatic example of the Nasrid regal defensive architecture.