Buddhism in Germany looks back to a history of over 150 years. Arthur Schopenhauer was one of the earliest Germans who were influenced by Buddhism. Schopenhauer got his knowledge of Buddhism from authors like Isaac Jacob Schmidt. German Buddhists or Orientalists like Karl Eugen Neumann, Paul Dahlke, Georg Grimm, Friedrich Zimmermann and the first German Buddhist monk Nyanatiloka were also influenced by Schopenhauer and his understanding of Buddhism. But also German Indologists like Hermann Oldenberg and his work ”Buddha, sein Leben, seine Lehre, seine Gemeinde“ had an important influence on German Buddhism. In 1888 Subhadra Bickshu published the first edition of the "Buddhistischer Katechismus", a work based on the "Buddhist Catechism" of Henry Steel Olcott. In 1903 the first German Buddhist organisation was founded by the Indologist Karl Seidenstücker in Leipzig. In 1904 Florus Anton Gueth became the Theravada monk Nyanatiloka Mahathera. Some important Pali texts were translated into German in the early part of the 20th century by scholars like Karl Eugen Neumann, Nyantiloka and others. In 1922 Hermann Hesse published his famous work "Siddhartha", which has been translated into many languages. In 1924 Dr. Paul Dahlke established the first German Buddhist monastery, the "Das Buddhistische Haus" in Berlin. The German Dharmaduta Society, initially known as the Lanka Dhammaduta Society and dedicated to spreading the message of the Buddha in Germany and other Western countries, was founded by Asoka Weeraratna in Colombo, Sri Lanka in 1952. In 1952 a German Branch of the Buddhist Order Arya Maitreya Mandala was founded by Lama Anagarika Govinda. The German Dharmaduta Society sponsored the first Buddhist Mission from Sri Lanka to Germany, which left the Colombo Harbour by ship ‘SS Orantes’ on June 16th, 1957. The three monks in this historic mission comprised Ven. Soma, Ven. Kheminda and Ven. Vinîta. They were all recruited from the Vajiraramaya Temple, Bambalapitiya in Colombo. Asoka Weeraratna who conceived and initiated this landmark event joined the Mission in Berlin in July 1957 having flown in from Colombo. The mission was accommodated at "Das Buddhistische Haus" in Berlin - Frohnau. In December 1957 Asoka Weeraratna on behalf of the Trustees of the German Dharmaduta Society purchased the premises of "Das Buddhistische Haus" from the heirs of Dr. Dahlke. It is now a Centre for the spread of Theravada Buddhism in Europe. As the second oldest Buddhist institution in Europe, German authorities have designated it a National Heritage site. In 2015 the first bhikkhuni ordination in Germany, the Theravada bhikkhuni ordination of German nun Samaneri Dhira, occurred on June 21 at Anenja Vihara. According to the Deutsche Buddhistische Union, an umbrella organisation of the Buddhist groups in Germany, there are about 245,000 active Buddhists in Germany, 50% of them are Asian immigrants. They are organized in about 600 groups. In 1977 there were just 15 Buddhist groups.