At the top of Calle Cabada is El Cuartelón , a crumbling brick Spanish fort with graceful arches that provides stunning town and bay views. Continue on this street for 200m to Restaurante el Mirador for an even better vantage point. You'll see remnants of the old fortresses here and at the Fuerte Fernando VII , on the point beyond Parque de las Madres, a block over from Parque Calixto García. There's also a sentinel tower at the entrance to the town, coming in from Holguín.