A seven-metre-tall bronze aurochs glaring down the slope of the castle hill — by some distance the most photographed thing in town. The Tarvas was raised in 2002 by the Tallinn-based sculptor Tauno Kangro and quickly became the symbol of Rakvere; you'll see its silhouette on every souvenir, brochure and bus.
It is also, frankly, one of the better pieces of recent civic sculpture in Estonia: muscular, alert, and properly enormous. Climb up to it from the Pikk Street car park (a five-minute walk), photograph from below to get the full sense of scale, and then continue up to the castle ruins above.