Cortijo de Alventus y las cacerías reales Historical milestone · Trebujena, Costa Noroeste, Cádiz Image of Trebujena, not of the place itself. A former estate of the Dukes of Medina Sidonia located beside the Guadalquivir, traditionally devoted to the breeding and testing of fighting bulls. Alfonso XIII stayed there during his hunting trips in the area in the early 20th century. Photo: El Pantera (CC BY-SA 4.0) What to see and do in Trebujena