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Laurentian Library

laurentian library, laurentian library michelangelo
The Laurentian Library Biblioteca Medicea Laurenziana is a historical library in Florence, Italy, containing a repository of more than 11,000 manuscripts and 4,500 early printed books1 Built in a cloister of the Medicean Basilica di San Lorenzo di Firenze under the patronage of the Medici pope, Clement VII, the Library was built to emphasize that the Medici family were no longer mere merchants but members of intelligent and ecclesiastical society It contains the manuscripts and books belonging to the private library of the Medici family The library is renowned for the architecture planned and built by Michelangelo and is an example of Mannerism123

A Codex Laurentianus identifies any of the book-bound manuscripts in the library


  • 1 Architecture
    • 11 Vestibule
    • 12 Staircase
    • 13 Reading room
    • 14 Interpretation
  • 2 Collection
  • 3 See also
  • 4 References
  • 5 Further reading
  • 6 External links


The Laurentian Library was commissioned in 1523 and construction began in 1525; however, when Michelangelo left Florence in 1534, only the walls of the reading room were complete It was then continued by Tribolo, Basari, and Ammannati based on plans and verbal instructions from Michelangelo The library opened by 1571 In this way, the library integrates parts executed by Michelangelo with others built much later in an interpretation of his instructions The Laurentian Library is one of Michelangelo's most important architectural achievements Even Michelangelo's contemporaries realized that the innovations and use of space in the Laurentian Library were revolutionary3

The admirable distribution of the windows, the construction of the ceiling, and the fine entrance of the Vestibule can never be sufficiently extolled Boldness and grace are equally conspicuous in the work as a whole, and in every part; in the cornices, corbels, the niches for statues, the commodious staircase, and its fanciful division-in all the building, as a word, which is so unlike the common fashion of treatment, that every one stands amazed at the sight thereof – Giorgio Vasari4

The two-story Quattrocento cloister was to remain unchanged by the addition of the library Because of this, certain features of Michelangelo’s plan such as the length and width were already laid out Therefore, walls were built on already pre-existing walls and cloisters Because the walls were built on pre-existing walls, recessing the columns into the walls was a structural necessity This also led to a unique style and pattern that Michelangelo takes advantage of2

The vestibule


The vestibule, also known as the ricetto, is 1950 m long, 1050 m wide, and 146 m tall 64 by 67 by 48 feet3 It was built above existing monastic quarters on the east range of the cloister, with an entrance from the upper level of the cloisters Originally, Michelangelo had planned for a skylight, but Clement VII believed that it would cause the roof to leak, so clerestory windows were incorporated into the west wall Blank tapering windows––framed in pietra serena, surmounted by either triangular or segmental pediments, and separated by paired columns set into the wall––circumscribe the interior of the vestibule2

Lit by windows in bays that are articulated by pilasters corresponding to the beams of the ceiling, with a tall constricted vestibule executed to Michelangelo's design in 1559 by Bartolomeo Ammannati1 that is filled with a stair that flows up to and down from the entrance to the reading room, the Library is often instanced as a prototype of Mannerism in architecture5



The plan of the stairs changed dramatically in the design stage Originally in the first design in 1524, two flights of stairs were placed against the side walls and formed a bridge in front of the reading room door A year later the stairway was moved to the middle of the vestibule Tribolo attempted to carry out this plan in 1550 but nothing was built Ammannati took on the challenge of interpreting Michelangelo’s ideas to the best of his abilities using a small clay model, scanty material, and Michelangelo’s instructions3

The staircase leads up to the reading room and takes up half of the floor of the vestibule The treads of the center flights are convex and vary in width, while the outer flights are straight The three lowest steps of the central flight are wider and higher than the others, almost like concentric oval slabs As the stairway descends, it divides into three flights23

The reading room

Reading roomedit

The reading room is 4620 m long, 1050 m wide, and 84 m high 152 by 35 by 28 feet There are two blocks of seats separated by a center aisle with the backs of each serving as desks for the benches behind them The desks are lit by the evenly spaced windows along the wall The windows are framed by pilasters, forming a system of bays which articulate the layout of the ceiling and floor3

Because the reading room was built upon an existing story, Michelangelo had to reduce the weight of the reading-room walls The system of frames and layers in the walls’ articulation reduced the volume and weight of the bays between the pilasters3

Beneath the current wooden floor of the library in the Reading Room is a series of 15 rectangular red and white terra cotta floor panels These panels, measuring 8-foot-6-inch 259 m on a side, when viewed in sequence demonstrate basic principles of geometry It is believed that these tiles were arranged so as to be visible under the original furniture; but this furniture was later changed to increase the number of reading desks in the room67


The Bibliotheca Medicea is also a fully modern scholarly library

In the ricetto, critics have noted that the recessed columns in the vestibule make the walls look like taut skin stretched between vertical supports This caused the room to appear as if it mimics the human body, which at the time of the Italian Renaissance was believed to be the ideal form The columns of the building also appear to be supported on corbels so that the weight seems to be carried on weak elements Because of the seemingly instability of the structure, the viewer cannot discern whether the roof is supported by the columns or the walls This sense of ambiguity is heightened by the unorthodox forms of the windows and, especially, by the compressed quality of all architectural elements, which creates a sense of tension and constrained energy2

The use of the classical orders in the space is particularly significant The recessed columns superficially appear to be of the austere and undecorated Doric order, typically considered to have a more masculine character The Doric order would be placed at the base in an hierarchy of orders such as found in Roman buildings like the Colosseum, with the Ionic, Composite and Corinthian being progressively lighter and more decorative and feminine However, closer examination establishes that the Composite order is used, but with the characteristic decorative acanthus leaves and diagonal volutes of the capitals stripped off, leaving the top of the column denuded In architectural terms, it is an act of violence that is unprecedented in mannerism, and a sophistication that would not have escaped contemporary observers

The dynamic sculpture of the staircase appears to pour forth like lava from the upper level and reduces the floor space of the vestibule in a highly unusual way In the central flight, the convex treads vary in width which makes the entire arrangement disquieting2

In sharp contrast to the vestibule and staircase, the reading room’s evenly spaced windows set between pilasters in the side walls let in copious amounts of natural light and create a serene, quiet, and restful appearance2

Mark Rothko stated that the vestibule and the walls in the staircase of the library influenced his 1959 Seagram Murals8

External video
Michelangelo, Laurentian Library, Smarthistory9


In 1571, Cosimo I, Grand Duke of Tuscany, opened the still-incomplete Library to scholars1 Notable additions to the collection were made by its most famous librarian, Angelo Maria Bandini, who was appointed in 1757 and oversaw its printed catalogues

The Laurentian Library houses about 11,000 manuscripts, 2,500 papyri, 43 ostraca, 566 incunabula, 1,681 16th-century prints, and 126,527 prints of the 17th to 20th centuries10 The core collection consists of about 3,000 manuscripts, indexed by Giovanni Rondinelli and Baccio Valori in 1589, which were placed on parapets plutei at the library's opening in 1571 These manuscripts have the signature Pluteus or Pluteo Plut These manuscripts include the library Medici family collected during the 15th century and re-acquired by Giovanni di Medici Pope Leo X in 1508, and moved to Florence in the 1520s by Giulio di Giuliano de' Medici Pope Clement VII The Medici library was joined by collections by Francesco Sassetti and Francesco Filelfo and manuscripts acquired by Leo X and by the library of the Dominican convent of San Marco

The Library conserves the Nahuatl Florentine Codex, the major source of pre-Conquest Aztec life Among other well-known manuscripts in the Laurentian Library are the sixth-century Syriac Rabula Gospels; the Codex Amiatinus, which contains the earliest surviving manuscript of the Latin Vulgate Bible; the Squarcialupi Codex, an important early musical manuscript; and the fragmentary Erinna papyrus containing poems of the friend of Sappho

See alsoedit

  • Papyrus 35
  • Papyrus 36
  • Papyrus 89
  • Uncial 0171
  • Uncial 0174
  • Minuscule 458
  • Minuscule 619
  • Minuscule 836 Gregory-Aland


  1. ^ a b c d Medicean-Laurentian Library Encyclopædia Britannica 2007 
  2. ^ a b c d e f g Fazio, Michael; Moffett, Marian; Wodehouse, Lawrence, Buildings across Time London: Lawrence King Publishing Ltd, 2009, pp 308–310
  3. ^ a b c d e f g Lotz, Wolfgang; Howard, Deborah, Architecture in Italy, 1500–1600 New Haven: Yale University Press, 1995, pp 91–94
  4. ^ Vasari, Giorgio; Blashfield, Edwin Howland; Blashfield, Evangeline Wilbour; Hopkins, Albert Allis, Lives of Seventy of the Most Eminent Painters, Sculptors, and Architects New York: C Scribner's Sons, 1909, pp 115–116
  5. ^ "Vestibule of the Laurentian Library" Olga's Gallery Retrieved February 14, 2007 
  6. ^ Ben Nicholson, Jay Kappraff, and Saori Hisano, "The Hidden Pavement Designs of the Laurentian Library", pp 87–98 in Nexus II: Architecture and Mathematics, ed Kim Williams, Fucecchio Florence: Edizioni dell'Erba, 1998
  7. ^ Rosin, Paul L; Martin, Ralph R 2003 "Hidden Inscriptions in the Laurentian Library" PDF Proceedings of Int Soc Arts, Mathematics, and Architecture ISAMA: 37–44 Retrieved 2007-02-16 
  8. ^ Jonathan Jones 6 December 2002 "Feeding fury" The Guardian 
  9. ^ "Michelangelo, Laurentian Library" Smarthistory at Khan Academy Retrieved March 18, 2013 
  10. ^ Fondi principali bmlfirenzesbnit

Further readingedit

  • Pierre Petitmengin – Laetitia Ciccolini, Jean Matal et la bibliothèque de Saint Marc de Florence 1545, "Italia medioevale e umanistica", 46, 2005, pp 207–238

External linksedit

  • Official website in English
  • Photos of the Library and vestibule, with Giorgio Vasari's remarks
  • Texts on Wikisource:
    • Clark, J W On the Vatican Library of Sixtus IV

Coordinates: 43°46′28″N 11°15′12″E / 43774521°N 11253374°E / 43774521; 11253374

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