Another important tradition recognizes a great battle known as the "Conspiracy of the Barons" that took place on the outskirts of Teramo on 7 May 1486. At this time 500 soldiers from the Teramo area, under the orders of Pope Innocent VIII and led by Captain Roberto Sanseverino, encountered the troops of Alfonso, Duke of Calabria and son of King Ferdinand of Aragon. From the roofs of the houses and the city walls, the townspeople of Montorio al Vomano were able witness this fierce military engagement. Actors in authentic dress play the parts of soldiers during the present day enactment of this historical event.