Sky of Salamanca, Fernando Gallego, 1440-1507, University of Salamanca, Salamanca, UNESCO World Heritage Site, Castile and Leon, Spain, Europe

mural ceiling spain 15th century art history europe architecture cultural heritage fresco celestial figures allegory education renaissance craftsmanship vibrant colors historical site detailed artwork muralist masterpiece symbolism religious imagery thematic scenes mural painting cultural significance educational art sky depiction medieval art mural conservation iconic artwork classical art university artwork mural dimensions heritage site historical murals past cultures visual storytelling sky salamanca fernando gallego 1440 1507 university unesco world