You’ll need to exit the Alcazaba in order to enter the Nasrid Palaces and visit the Mexuar. Go down Torre de la Vela back to Arms Square and head to the first door on the right to the “Adarve Gardens”, which leads you to the Alcazaba exit. Leaving the Alcazaba, go to the large square building in front, the Palace of Charles V. With the facade in front of you, you will see a queue on your left, the Entrance to the Nasrid Palaces. Try to be very punctual! Wait in the queue until you arrive at the checkpoint, where you’ll need to show your ticket to the guard. The Mexuar is located beyond the ticket check.