The construction of the monumental complex of S. Claire began in 1310, at the will of King Robert of Anjou and his second wife Sancha of Majorca. Upon entering the Cloister, the first room on the right houses a presepio (nativity scene) featuring shepherds of the eighteenth and the nineteenth centuries. Over the centuries, the cloister has undergone various transformations. The most important was performed by D.A. Vaccaro between 1739 and 1742, during the abbess of Sister Ippolita Carmignano. At the end of the two arms of the Cloister is the entrance to the Opera Museum. Divided into four rooms, the museum offers a cross-section of the Neapolitan history, from antiquity to the twentieth century, and retains some of the treasures the bombings of 1943 failed to destroy. The tour continues to the Archaeological Area, where there lie the remains of a Roman spa discovered after the war, which, presumably, belonged to a patrician villa. The spa is the most intact example of a thermal baths from acient Neapolis.