This is a climb to a small hill called Piedra de la Torre (Tower Stone), visible from the highway, from Teatinos, and from various parts of the city. It offers fantastic views in both directions.
Access is mostly very good. You can easily enter from the Ciudad de los Niños (Children's City), from past the cemetery via the Los Mimbrales equestrian center, or, if you're coming from Teatinos, via one of the underpasses beneath the highway—a slightly more challenging route if you're familiar with the area. The walk, which can be done by bike or with pets, is around 5 to 8 km, depending on the route you take. Generally, the path is quite good, except for the final stretch just before reaching La Piedra.
On the way back, if you've parked near the cemetery, you can grab a drink or a bite to eat at the Los Mimbrales equestrian center (if it's open). They serve homemade food in a great atmosphere.