Pope Francis has called for the expansion of the Vatican library and archives to a building outside Vatican City to make more “available this precious patrimony.”

In a letter dated Oct. 29 and issued on Tuesday, the Pope declared that part of the archives and library be moved to a building on extraterritorial Vatican property at the Archbasilica of St. John Lateran.

The building where the documents and books will be housed in the future is also used for Rome’s major seminary.

“The centuries-old care for the custody of the acts and documents concerning the government of the universal Church, combined with a commitment to the development and dissemination of culture, are the characteristic features of the activity of the Vatican Archives and Library,” Pope Francis wrote in a papal chirograph.

According to the letter, renovations will be undertaken to prepare the space. Francis has also asked for the creation of a commission of representatives from the Secretariat of State, the Vatican Apostolic Archives, and the Vatican Library to decide what categories of documents should be transferred to the new location.

In July, Pope Francis appointed Augustinian Father Rocco Ronzani as the new prefect of the Vatican Apostolic Archive.

Previously known as the Vatican’s “secret archive,” it contains 53 miles of underground shelving preserving documentation from historic papacies, ecumenical councils, conclaves, and Vatican nunciatures, or embassies, around the world.

The Vatican Library, according to its website, “preserves over 180,000 manuscripts (including archival units), 1,600,000 printed books, about 9,000 incunabula, over 300,000 coins and medals, more than 150,000 prints, thousands of drawings and engravings, and over 200,000 photographs.”

In its current form the library dates to the 14th century, though there is evidence the Catholic Church has had a library and archive from as early as the 300s.

Pope Leo XIII opened the archive to scholars in 1881. Qualified researchers can request permission to visit and view specific documents in both the archive and the library.