Wallcharts were a part of the ‘learn-by-pictures’ lessons, which occurred in Danish schools from the mid-1800s onwards. The subject was especially intended to develop younger schoolchildren’s abilities to observe, analyze and articulate themselves about, their surroundings. The collection is the largest in Europe, and consists of approximately 12,500 Danish and foreign wallcharts, primarily from the period 1800-1950. The history of the collection dates from the establishment of the Danish Museum of School History in 1887. After the museum closed in 2008, the collection has been examined, registered, and recently digitized.