The Duino Elegies (German: Duineser Elegien) are a collection of ten elegies written by the Bohemian-Austrian poet Rainer Maria Rilke. He was then "widely recognized as one of the most lyrically intense German-language poets", and began the elegies in 1912 while a guest of Princess Marie von Thurn und Taxis at Duino Castle, on the Adriatic Sea. The poems were dedicated to the Princess upon their publication in 1923. During this ten-year period, the elegies languished incomplete for long stretches of time as Rilke had frequent bouts with severe depression—some of which were related to the events of World War I and being conscripted into military service. Aside from brief periods of writing in 1913 and 1915, he did not return to the work until a few years after the war ended. With a sudden, renewed burst of frantic writing which he described as a "boundless storm, a hurricane of the spirit"—he completed the collection in February 1922 while staying at Château de Muzot in Veyras, Switzerland. After their publication in 1923, the Duino Elegies were soon recognized as his most important work.