Cerro de San Cristóbal rises just beyond the Alcazaba and gives one of the best broad views over Almería. The walk is rougher and quieter than the main fortress visit, and that is exactly why it is worth doing if you have time.
Come for the panorama rather than for polished monumentality. From here the city looks like what it is: a compact port wedged between the Mediterranean and an unusually bare Andalusian interior.