The building was auctioned in public in 1906, and bought by Ugo da Como and his wife Maria Glisenti, who, conscious of the historical importance, called the architect A. Tagliaferri to restore it. As was fashionable in his time, they furnished the house, and today the extensive collections, including the library, 405 incunabula (one of the most important collection in Italy), 470 manuscripts and rare illuminated codes, parchments and prints. It also contains one of the smallest books in the world, 15x9 mm, which reproduces the letter by Galileo Galilei to Cristina di Lorena. In addition, it holds manuscripts letters by Ugo Foscolo to his lover Marzia Martinengo, written in 1807-1809.