The construction and transformation of noble residences was at its zenith during the second half of the 15th century. After 1474, masonry and brick façades, which were popular under Henry IV's rule, were replaced with granite façades with massive keystones. A corridor would serve as a transitional space between the street and the private space of the courtyard. The palace, one of the most exquisite in the city, exhibits its Moorish origins on the left horseshoe arch, while the main door and windows are designed in a flamboyant Gothic style more befitting of the time. The walls are partially covered with Segovian sgraffito, a technique where multiple layers of contrasting glaze are used and then scratched through to reveal the lower layers of color. The square was named after Antonio de Oquendo, a notable goldsmith of Basque origin who lived in Segovia during the 15th century. The building on the left side of the plaza served as both his home and his workshop.