The city did not suffer any decline during the last centuries of the Roman empire and was captured peacefully by the Goths in the fifth century AD.From 1018 to 1118, Zaragoza was one of the taifa kingdoms, independent Muslim states which emerged in the eleventh century following the destruction of the Caliphate of Córdoba.The average annual precipitation is a scanty 322 millimetres (12.7 in) with abundant sunny days, and the most rainy seasons are spring (April–May) and autumn (September–November), with a relative drought in summer (July–August) and winter (December–March).Temperatures are hot in summer reaching up to 44.5 °C (112.1 °F), and in winter are cool, either because of the fog (about twenty days from November to January) or a cold and dry wind blowing from the northwest, the Cierzo (related to other northerly winds such as the Mistral in the SE of France) on clear days. The Cierzo can cause a 'wind chill factor' as low as −10 °C (14 °F) during cold spells.The Old Town of Zaragoza registered 11 881 immigrants, which represents 25% of the population of the district.as it lies in a wide basin entirely surrounded by mountains which block off moist air from the Atlantic and Mediterranean.The population of the metropolitan area was estimated in 2006 at 783,763 inhabitants.
The General Military Academy, a higher training center of the Spanish Army, was re-established on 27 September 1940, by Minister of the Army José Enrique Varela Iglesias.
After Alfonso's death without heirs in 1134, Zaragoza was swiftly occupied by Alfonso VII of León and Castile.
The city control was held by García Ramírez, king of Navarra, until 1136 when it was given to Ramiro II the Monk in the treaty signed at the betrothal of Ramiro's daughter Petronila and Alfonso's son Sancho.
It was also a candidate for the European Capital of Culture in 2012.
The city is famous for its folklore, local gastronomy, and landmarks such as the Basílica del Pilar, La Seo Cathedral and the Aljafería Palace.