The hermitage of San Miguel Alto (as opposed to the Church of San Miguel Bajo) is small, secluded, almost dwarfed by the stunning landscape at your feet. The chapel, built in 1671 on what was the Arab tower Aceituno is culminating the Nazari wall. It was destroyed during the French occupation, but been rebuilt a few years later. On the Sunday closest to the 29th of September is the day of San Miguel celebrated with a unique pilgrimage.
The views from here are stunning; the Alhambra and the whole city of Granada. Also the main part of the city wall is visible. A path along the wall will take you to Sacromonte.