List of title and honours of the Spanish Crown
The Crown of Spain (1516  present) is a series of titles and honors given to the reigning monarch of Spain. The Spanish Empire at its height was very powerful, in fact it was one of the most powerful empires. The Kingdom of Spain used to be the Crown of Castile, and the Crown of Aragon. Both kingdoms united when Isabella I married Ferdinand II of Aragon. Both crowns descended to their daughter Joanna of Castile. The Spanish Empire for a couple decades was united with the Habsburg Empire. Today the King of Spain is Felipe VI. Felipe holds the main title as "King of Spain" but not as Holy Roman Emperor nor King of Gibraltar. The Kingdom was taken by the British and the current head of state of Gibraltar is the current British Monarch.