The Treaty of Ágreda Historical milestone · Ágreda, Moncayo, Soria Image of Ágreda, not of the place itself. The agreement signed in 1304, also known as the Arbitral Sentence of Torrellas, set the territorial boundaries between the crowns of Aragon and Castile, and left this town as a border stronghold, with everything that implied in terms of fueros and privileges. It was not the only pact between the two crowns to bear the name of Ágreda: other earlier treaties, of 1162, 1186 and 1281, were also signed under this same name. 1304 Photo: Diego Delso (CC BY-SA 4.0) What to see and do in Ágreda