to literature written in the Spanish language, including literature composed by Spanish and Latin American writers. It may include Spanish poetry, prose, and novels. Spanish literature is the name given to the literary works written in Spain throughout time, and those by Spanish authors worldwide. Due to historic, geographic, and generational diversity, Spanish literature has known a great number of influences and is very diverse. Some major movements can be identified within it. Highlights include the Cantar de Mio Cid, the oldest preserved Spanish cantar de gesta. It is written in medieval Spanish, the ancestor of modern Spanish. La Celestina is a book published anonymously by Fernando de Rojas in 1499. This book is considered to be one of the greatest in Spanish literature, and traditionally marks the end of medieval literature and the beginning of the literary renaissance in Spain. Besides its importance in the Spanish literature of the Golden Centuries, Lazarillo de Tormes is credited with founding a literary genre, the picaresque novel, so called from Spanish pícaro, meaning "rogue" or "rascal". In these novels, the adventures of the pícaro expose injustice while simultaneously amusing the reader. Published by Miguel de Cervantes in two volumes a decade apart, Don Quixote is the most influential work of literature to emerge from the Spanish Golden Age and perhaps the entire Spanish literary canon. As a founding work of modern Western literature, it regularly appears at or near the top of lists of the greatest works of fiction ever published. Painting and sculpture Spain's greatest painters during the Spanish Golden Age period included El Greco, Bartolomé Esteban Murillo, Diego Velázquez, and Francisco Goya, who became world-renowned artists between the period of the 17th century to 19th century also in early parts of the 20th century. However, Spain's best known artist since the 20th century has been Pablo Picasso, who is known for his abstract sculptures, drawings, graphics, and ceramics in addition to his paintings. Other leading artists include Salvador Dalí, Juan Gris, Joan Miró, and Antoni Tàpies. Architecture During the Prehistoric period, the megalithic Iberian and Celtic architectures developed. Through the Roman period, both urban development (ex. the Emerita Augusta) and construction projects ( the Aqueduct of Segovia) flourished. After the pre-Romanesque period, in the architecture of Al-Andalus, important contributions were made by the Caliphate of Córdoba (the Great Mosque of Córdoba), the Taifas (Aljafería, in Zaragoza), the Almoravids and Almohads