The San Cristoforo alla Certosa is located in Ferrara and is open for worship and liturgical functions. Borso d'Este was responsible for the idea of promoting the construction of a Carthusian monastery in Ferrara in 1452. As required by the rule of the order, the choice of the site on which to erect the Estense Charterhouse fell on a distance from the inhabited center. However, this isolation was brief: a few decades later, with the completion of the Addizione Erculea, the complex was enclosed in the circle of the Este walls, thus losing the characteristic of a "hermitage" but entering the image of the city renewed by Hercules I at the end of the fifteenth century. In 1498, next to the primitive church, the construction of a new and more spacious temple dedicated to San Cristoforo was started. Over time, the Borsian church was incorporated into the convent, while the new one became the fulcrum of the religious life of the Carthusians. The façade, which remained unfinished, was adorned in 1769 with a monumental marble portal, which the restorations completed in 2007 have brought back to its ancient splendor. Inside stand out the decorations of the side altars, the work of Nicolò Roselli, and those of the altarpieces of the transept, painted around 1570 by Bastianino. An impressive restoration campaign had recently allowed San Cristoforo to regain, alongside its original sacred function, also the important cultural role of one of the most significant and precious monuments of the Ferrara historical-artistic heritage.