Témoignage de John Evelyn (1644)
The garden, which is called the Belvedere di Monte Cavallo, in emulation to that of the Vatican, is most excellent for air and prospect ; its exquisite fountains, close walks, grots, piscinas, or stews for fish, planted about with venerable cypresses, and refreshed with water-music, aviaries, and other rarities.
(The diary of John Evelyn, Ed. William Bray, J.M. DENT et E.P DULTON, London-New York, 1905, Tome I, p.111.)