The capital of Aragon is Zaragoza, an 8-letter word. Zaragoza is a city in northeastern Spain, located on the Ebro river. It is the capital of the Zaragoza province and the autonomous community of Aragon. It is also the fifth-largest city in Spain, with a population of around 700, 000 people. Zaragoza is known for its historical monuments, such as the Aljafería Palace, the La Seo Cathedral, and the Basilica of Our Lady of the Pillar. It is also home to the University of Zaragoza, one of the oldest universities in Spain.