The Tower of the Seven Floors (Torre de los Siete Suelos), on the southern part of the fortress, was the most important entrance to the Alhambra. The Muslims called it Bib «al-Gudur», which means Gate of the Wells, because of the dungeons that existed in the fields that were in front of the tower, which were used to keep prisoners.

The tradition says that Boabdil, the last Nasrid king, came out through this gate to give the keys of the Alhambra to the Catholic Monarchs and that he asked them not to allow anyone to use it again and therefore to close it down for ever.