The siege of Barcelona took place between 14 September and 19 October 1705 during the War of the Spanish Succession when a multinational Grand Alliance army led by Lord Peterborough, supporting the Habsburg pretender to the Spanish throne, captured the city of Barcelona from its Spanish Bourbonic defenders, most of whom then joined the Habsburg army.

Montjuïc Castle is an old military fortress, with roots dating back from 1640, built on top of Montjuïc hill in Barcelona, Catalonia, Spain. It currently serves as a Barcelona municipal facility.