centuries. But by the mid-20th century this geographical connotation was questioned under the arguments of several authors, especially Camón Aznar (1945) and Rosenthal (1958), who defined Plateresque generically as a unitary amalgam of elements – Gothic, Muslim, and Renaissance. Aznar does not regard it as a style properly denoted as Renaissance, and Rosenthal emphasizes its association with certain buildings in other European countries, mainly France and Portugal, but also Germany and others. This problem highlights the imprecision of the name Plateresque and the difficulties inherent in using it to describe productions from a period of confusion and transition between styles, especially since they are characterized by decorative profusion suggesting an attempt to disguise the failure of Spanish architects to develop new structural and spatial ideas. It has even been suggested that this problem could be solved by identifying what is called Plateresque as the replacement of Gothic decoration with grotesques inspired by the works of the Italian Sebastiano Serlio. Any persuasive argument, however, must admit that the Plateresque or Protorenaissance was an artistic movement that responded to the demands of the ruling classes of imperial Spain, which had just completed the Reconquista and begun the colonization of the Americas. The Spanish were developing a consciousness of their growing power and wealth, and in their exuberance launched a period of construction of grand monuments to symbolize these with what are now considered national treasures. Features Spanish Plateresque Typical Plateresque facades, like those of altarpieces, were made as carefully as if they were the works of goldsmiths, and decorated as profusely. The decoration, although of various inspirations, was mainly of plant motifs, but also had a profusion of medallions, heraldic devices and animal figures, among others. Plateresque utilized a wealth of materials: gold plates on crests and roofs, vases, etc. There is evidence of more polychrome works at the conclusion of the first third of the 16th century, when there appeared heraldic crests of historical provenance and long balustrades, to mention one kind of less busy decoration. The proliferation of decoration for all architectural surfaces led to the creation of new surfaces and subspaces, which were in turn decorated profusely, such as niches and aediculas. Italian elements were also being developed progressively as decoration: rustications, classical capitals, Roman arches and especially grotesques. The decoration had specific meanings and can not be read as merely decorative; thus laurels, military shields and horns-of-plenty were