Historic Town Hall of Caspe Monument · Caspe, Bajo Aragón-Caspe, Zaragoza Image of Caspe, not of the place itself. The historic town hall of Caspe, on the plaza Mayor, has a Classicist façade from the 19th century. The building is known for having hosted the Compromise of Caspe, the meeting of nine compromisarios, three for Aragon, three for Catalonia and three for Valencia, held between March and April 1412, with deliberations extending until 25 June, which concluded on 28 June 1412 with the proclamation of Ferdinand of Antequera as the new king of the Crown of Aragon. Photo: Club Deportivo Altorricón (CC BY 2.0) What to see and do in Caspe