The Alameda is Sigüenza's everyday breathing space, a long green park below the old town where locals walk, sit, and let children run around after school. It gives a softer counterpoint to all that cathedral stone and castle wall.
For travellers, it is most useful as a pause between sightseeing and dinner. The park also helps orient the town: the railway station lies below, the cathedral rises above, and the old streets climb away from its edge.