On Tuesday, Catalan leaders signed the region's official declaration of independence.
The motion comes in the wake of the controversial referendum, which was branded "illegal" by the government in Madrid.
The President of Catalonia, Carles Puigdemont, has said he will seek to acheive independence by way of negotiating with the Spanish government.
Crisis talks are scheduled to take place to discuss the vote, which saw violence across the Catalan region as members of the Guardia Civil police force clashed with voters.
So why exactly does Catalonia want independence? Why do so many people want to rip up their relationship with Spain and go it alone, with all the accordant risks?
See the video below: