The Charterhouse and Museum of San Martino is located in Naples on the top of the hill overlooking the city, reachable by funicular.

The Certosa di San Martino , founded in 1325, was entrusted to the architects Tino di Camaino , a Sienese sculptor, and the Neapolitan Francesco De Vito.

Over the course of five centuries, the Certosa di San Martino underwent constant renovations. In 1581, a grandiose extension project was started, entrusted to the architect Giovanni Antonio Dosio , destined to transform the severe Gothic aspect into the current precious and refined Baroque style.

The growing number of monks forced a radical restructuring of the Great Cloister : new cells were built and the entire water system was revised. The promoter of this new and spectacular appearance of the Certosa di San Martino is the prior Severo Turboli , in office from the last twenty years of the sixteenth century to 1607. The works started under the direction of Dosio, are continued by Giovan Giacomo di Conforto, who will build the monumental cloister cistern.

The Certosa di San Martino became state property in 1863 and destined as a museum in 1866 by the will of Giuseppe Fiorelli . It was then annexed to the National Museum as a detached section and opened to the public starting from 1867. From its initial splendor, today it preserves the marvelous gothic undergrounds, considered as a real engineering work.