Here, too, the tapestries, 16th- to 18th-century mas terpieces, are well worth seeing; they were collected by the Spanish royal family.
Spain has never had a royal family. 
mnli hypothesis: Spain has never had a royal family.  premise: Here, too, the tapestries, 16th- to 18th-century mas terpieces, are well worth seeing; they were collected by the Spanish royal family.