Der Sturm (German: The Storm) was a magazine covering the expressionism movement founded in Berlin in 1910 by Herwarth Walden. It ran weekly until monthly in 1914, and became a quarterly in 1924 until it ceased publication in 1932.
Among the literary contributors were Peter Altenberg, Max Brod, Richard Dehmel, Alfred Döblin, Anatole France, Knut Hamsun, Arno Holz, Karl Kraus, Selma Lagerlöf, Adolf Loos, Heinrich Mann, Paul Scheerbart, and René Schickele. Der Sturm consisted of pieces such as expressionistic dramas (i.e. from Hermann Essig and August Stramm), artistic portfolios (Oskar Kokoschka), essays from artists (the Kandinsky Album), and theoretical writings on art from Herwarth Walden. The most well-known publications resulting from the magazine were the Sturmbücher (storm-books), (e.g. Sturmbücher 1 and 2 were works of August Stramm – Sancta Susanna und Rudimentär). Postcards were also created featuring the expressionistic, cubist, and abstract art of Franz Marc, Wassily Kandinsky, Oskar Kokoschka, August Macke, Gabriele Münter, Georg Schrimpf, Maria Uhden, Rudolf Bauer and others. The term Sturm was branded by Walden to represent the way in which modern art was penetrating Germany at the time.
Particularly in the time before outbreak of the World War I, Der Sturm played a crucial role in the French-German exchange of expressionist artists, which led to a special relationship between Berlin and Paris. Regularly, poems and other texts of French and/or French-speaking expressionists were published (Guillaume Apollinaire, Blaise Cendrars, etc.). This relationship was renewed after the war despite the hostilities between the two countries caused by the fighting.
The Gallery 
The magazine also fostered the Galerie Der Sturm, started by Walden to celebrate its 100th edition, in 1912. The gallery became the focus for Berlin's modern art scene for a decade. Starting with an exhibition of Fauves and Der Blaue Reiter, followed by the introduction in Germany of the Italian Futurists, Cubists and Orphists, the gallery was to exhibit Edvard Munch, Georges Braque, Pablo Picasso, Albert Gleizes, Robert Delaunay, Jean Metzinger, Gino Severini, Jean Arp, Paul Klee, Wassily Kandinsky, and Kurt Schwitters.
After the war, Walden expanded Der Sturm into Sturmabende, lectures and discussions on modern art, and Die Sturmbühne, an expressionist theatre, as well as publishing books and portfolios by leading artists such as Oskar Kokoschka. Despite this, the gallery declined in importance after the war and closed in 1924, leaving the magazine to carry on as a quarterly until it too closed in 1932.
However, concerning the exact closing date of the Der Sturm Art Gallery (an offshoot of the magazine) as Maurice Godé, wrote in his book "Der Sturm of Hewarth Walden or the utopia of an autonomous art", the author wanted to promote the German "avant-garde" arts by means of both resident and touring exhibitions. Accordingly, Walden organized, until 1932, more than 200 exhibitions in its premises in Berlin plus multiple other touring exhibitions (Wanderausstellungen) in Germany and also in most other major European cities.