Once the church was gone, the empty square filled with everyday trade. It became an open-air market for perishable goods, with rows of wooden boxes and small stalls. When the economist and former governor of Madrid, Pascual Madoz, described the city in 1847, he counted 128 wooden stalls and 88 smaller stands in this street market. The building you see now came later, in 1916. One account credits the architect Alfonso Dubé y Díez. It is built on a rectangular plan with two floors, and each floor covers almost 2,000 square meters. The market has facades onto the Plaza del Conde de Miranda and onto the Cava de San Miguel, so it is worth walking around it rather than looking at one side only. Here is the remarkable part. Madrid once had formidable covered markets in this iron-architecture style, including La Cebada, La Paz and Los Mostenses. They all vanished. San Miguel is the only one that has reached our time, and it is protected as a Bien de Interés Cultural, in the category of Monument.