Computer museum was opened in 1996 by Chancellor of Germany Helmut Kohl. Its collection of first computing machines was collected by the pioneer of the industry Heinz Nixdorf. A 6000 sq. m museum entered the Guinness Book of Records as the largest computer museum in the world. Its exhibition is dedicated to five thousand years of informational technology development: from the appearance of written language in 3000 B.C. to the 21st century.