The Certosa, founded in 1366 thanks to the economic support of illustrious Pisan families, is located among the olive trees of Valgraziosa, rather isolated from the town of Calci, about 1 km away. The convent is accessed by two avenues with a suggestive pedestrian path from which you can enjoy the perspective view of the double facade of the complex. The outer, lower facade was intended for functions that could also be accessed by the locals: the pharmacy, the chapel of San Sebastiano or of the women, the parlor, and, separated from the courtyard of honor, a large green lawn area, the facade of the actual monastery in the center of which is the spectacular facade of the church, covered in white marble, with a double staircase and the crowning of the tympanum with the statue of the Assumption among angels. The convent, a cloistered monastery of the Carthusian order of San Bruno, was suppressed in the Napoleonic era first, and then by the House of Savoy, but was inhabited again by monks until 1969 when they definitively abandoned it. In the Certosa, the areas dedicated to eremitic life are open to the public, the large cloister along whose arms are arranged the 15 monks' cells, one of which is open to visitors, the areas of religious nature, the church and the chapels, and those where cenobitic life took place, the refectory and the chapter house. In the sacristy, the Atlantic Bible is exhibited, an extraordinary illuminated manuscript from the 12th century in four volumes; the visit to the monumental part concludes with the grand ducal guesthouse, the guesthouse cloister, the art gallery, and the long corridors whose walls are enriched with refined fresco decorations. The Certosa houses the Museum of Natural History of the University of Pisa, mainly set up in the monastery's service rooms: the grandiose granary, about 100 meters long, the oil mill, the laundries, the service courtyards for agricultural activities.