Where does “Alhambra” come from?

Alhambra comes from Spanish Alhambra, from Arabic الْحَمْرَاء, meaning "the red one," referring to the reddish color of the fortress's walls.

Ancestry of “Alhambra”, step by step

Step	Language	Word	Meaning
1	Spanish	Alhambra	—
2	Arabic	الْحَمْرَاء	the red

Alhambra — Etymology, Origin & Word History | Etymology Explorer