 Later, in 1623, it was further expanded and became, under the direction of architect Cosimo Fanzago, essentially the structure one sees today.In the early 19th century, under French rule the monastery was closed and was abandoned by the religious order.Today, the buildings house the National Museum of San Martino with a display of Spanish and Bourbon era artifacts, as well as displays of the "presepe"—Nativity scene—considered to be among the finest in the world.