With more than 4,500 artworks by artists of many nationalities, the MMK's collection is not just extensive; it is also extremly high-quality and diverse. Virtually no other German museum offers such a high concentration of outstanding contemporary art, and internationally as well, the MMK is regarded as one of the leading museums of modern and contemporary art. With its twentieth anniversary in 2011, the museum has decided to observe the occasion by beginning the process of digitizing its entire collection and making it accessible online. The first works to undergo this process are those in the exhibition MMK 1991-2011 - 20 Jahre Gegenwart (MMK 1991-2011 - 20 Years of Presence). In the coming months, the online catalogue will gradually be expanded and supplemented with additional materials such as texts and short videos on the artists and their works.