Luggage lockers at the Alhambra
It is not permitted to take large rucksacks, large bags, or suitcases into the Alhambra Monumental Complex (this includes the Nasrid Palaces, Alcazaba, and Generalife). If you bring a small daypack, you will be required to wear it on your front to prevent accidental damage to the walls.
There are free lockers available at the Access Pavilion (near the main TICKET OFFICE) and next to the Charles V Palace. You only need to show your entrance ticket to use a locker for the day of your visit. However, because the lockers often fill up quickly, it is highly recommended not to bring large bags with you to the Alhambra.