Origins: a fortress before the palaces
The fortification of Sabika Hill predates the Nasrid dynasty by several centuries. The site was already being used defensively by the 9th century, and was developed further in the 11th century under the Zirid ruler Badis ibn Habus, who made it the main stronghold controlling Granada. When Muhammad I founded the Nasrid dynasty in the 13th century and began building the Alhambra as a royal residence, he incorporated and reinforced this existing fortification substantially — adding new towers, extending the circuit of walls, and integrating the fortress with the emerging palace complex to its east. What you walk through today is primarily Nasrid construction from the 13th and 14th centuries, but it sits on the footprint of a much older strategic position.
Torre de la Vela — the tower everyone climbs
The largest and most visited tower of the Alcazaba, the Torre de la Vela (Tower of the Watch) stands at the westernmost tip of the hill. Its bell has been rung every 2nd of January since 1492 to mark the day Christian forces took Granada from the Nasrids — a tradition that continues today. The views from the top platform are exceptional: the Albaicín, the Sacromonte, the city centre below, and on clear days the Sierra Nevada to the south-east. The climb is short but steep and exposed; guardrails are in place, though the platform is open to the elements. This is one of the widest unobstructed panoramas in the city and worth every step.
Torre del Homenaje — the fortress keep
The Torre del Homenaje (Tower of Homage) is the tallest structure in the Alcazaba and was historically the most important. Its name refers to the ceremony of feudal homage paid to the sovereign — the political heart of the fortress rather than just a watchtower. During the early Nasrid period, before the palace complex to the east was developed, this tower served as royal accommodation within the fortress itself. It has three internal floors connected by a narrow staircase, and its silhouette, together with the Torre de la Vela, defines the distinctive roofline of the Alhambra as seen from the city. Interior access varies; check the signage at the base of the tower on the day.