There seem to be less big chains like we have in the UK like DFS, Furnitureland, etc. but most reasonably sized retail parks will still have large furniture store in them. Also worth keeping an eye out for second hand furniture shops, they are quite popular especially in the more touristy areas, where landlords regularly use them to kit out cheap apartments. Theres a big one near me on the way to Marbella, not sure where in Spain you are though as your profile say 'Michigan'.