An important factor in the development of the fantasy genre was the arrival of magazines devoted to fantasy fiction. The first such publication was the German magazine Der Orchideengarten which ran from 1919-1921.[49] In 1923, the first English-language fantasy fiction magazine, Weird Tales, was created.[50] Many other similar magazines eventually followed, most noticeably Unknown (AKA Unknown Worlds)[51] and The Magazine of Fantasy & Science Fiction [52] The pulp magazine format was at the height of its popularity at this time and was instrumental in bringing fantasy fiction to a wide audience in both the U.S. and Britain. Such magazines also played a large role in the rise of science fiction and it was at this time the two genres began to be associated with each other.