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![Der Schriftzug "Bibliothek des Deutschen Museums" über den Eingangstüren der Bibliothek des Deutschen Museums auf der Münchner Museumsinsel.](https://www.deutsches-museum.de/assets/_processed_/5/3/csm_Museumsinsel_Bibliothek_Eingang_a4252b01b2.jpg)
Der Schriftzug "Bibliothek des Deutschen Museums" über den Eingangstüren der Bibliothek des Deutschen Museums auf der Münchner Museumsinsel. Photo: Deutsches Museum
![Einblick in den Rara-Lesesaal der Bibliothek des Deutschen Museums auf der Münchner Museumsinsel.](https://www.deutsches-museum.de/assets/_processed_/c/c/csm_Museumsinsel_Bibliothek_Lesesaal_51612c420b.jpg)
Der Rara-Lesesaal der Bibliothek des Deutschen Museums. Photo: Deutsches Museum
Rara reading room
In the Rara reading room you can take a look at the library's most valuable holdings - by appointment only.
![](https://www.deutsches-museum.de/assets/_processed_/a/c/csm_Bib_PM_Schedel_8ac1c6f482.jpg)
Photo: Deutsches Museum
![Blick in einen Gang im Magazin der Bibliothek des Deutschen Museums, der von Bücherregalen gesäumt ist.](https://www.deutsches-museum.de/assets/_processed_/3/b/csm_Museumsinsel_Bibliothek_Magazin_5f2e670cae.jpg)
Einblick ins Magazin der Bibliothek. Photo: Deutsches Museum
The Stacks
Most of the books are stored in the stacks on the top floor of the library building.
![](https://www.deutsches-museum.de/assets/_processed_/b/a/csm_Bib_Hist_Baustelle_1928_602a2e052e.jpg)
Photo: Deutsches Museum
Under construction
Construction work: The scaffolding of the Library and Congress Hall building on Museum Island in 1928.
![](https://www.deutsches-museum.de/assets/_processed_/e/d/csm_Bib_Hist_Krieg_1944_1aa3919932.jpg)
Photo: Deutsches Museum
![](https://www.deutsches-museum.de/assets/_processed_/e/1/csm_Bib_Super_Wertvollstes_105c6e549a.jpg)
Photo: Deutsches Museum
The most precious
Superlatives of the library: The most precious - Peter Apian's "Astronomicum Caesareum" from 1540, here the title page. An edition of the Renaissance masterpiece was auctioned for more than half a million euros.
![](https://www.deutsches-museum.de/assets/_processed_/0/4/csm_Bib_PM_Astronomicum_2fefa41908.jpg)
Photo: Deutsches Museum
Detail
Detail from the "Astronomicum Caesareum" by Peter Apian, the most valuable book in the library.
![](https://www.deutsches-museum.de/assets/_processed_/8/6/csm_Bib_Super_Groesstes_01069d0f76.jpg)
Photo: Deutsches Museum
The largest
Superlatives of the library: The largest book in the collection is "Die Hamburgische Sonnenfinsternis-Expedition 1905". It measures 64.5 by 53 centimeters.
![](https://www.deutsches-museum.de/assets/_processed_/e/1/csm_Bib_Super_Kleinstes_f94eb07a9d.jpg)
Photo: Deutsches Museum
The smallest
Superlatives of the library: The smallest book, 2.5 by 3.0 centimeters, is the miniature on the "Berlin Trade Exhibition 1896".
![](https://www.deutsches-museum.de/assets/_processed_/b/b/csm_Bib_Super_Dickstes_1ce89a365e.jpg)
Photo: Deutsches Museum
The thickest
Superlatives of the library: The thickest book in the collection is the edition of the "German Imperial Laws", also called "Brick"", with 1880 pages from 1936.
![](https://www.deutsches-museum.de/assets/_processed_/8/2/csm_Bib_Super_Laengstes_3ac0eea0fe.jpg)
Photo: Deutsches Museum
The longest
Superlatives of the library: The "longest" work is the "Annalen der Physik". The journals have been published since 1799 and now fill 20 shelf meters in the stacks.
![](https://www.deutsches-museum.de/assets/_processed_/c/7/csm_Bib_Super_Aeltestes_2ebb5ce25d.jpg)
Photo: Deutsches Museum
The oldest
Superlatives of the library: The oldest book is the "Poeticon Astronomicon" from 1482. The illustration shows the page on the constellation "Aries".