This publication presents 100 utter masterpieces chosen from the extensive and invaluable holdings of the Spanish Royal Collections which conserve more than 165,000 pieces. They are outstanding representatives of all the artistic disciplines that enrich the Crown's treasury: illuminated books of hours, small devotional paintings, delicate pieces of goldwork and large tapestries, mediaeval textiles, sculptures, weapons and armour, furniture, carriages, frescoes, spectacular fountains, celebrated paintings by Bosch, Titian, Velázquez, Caravaggio, Goya and, in short, grandiose works which combine all the arts, like the Throne Room of the Royal Palace of Madrid.