Mozart's death site is located on Rauhensteingasse in Vienna, Austria. The famed composer lived in a house on this site from September, 1790 to December, 1791. The last year of his life was a productive time for the young composer, including his opera The Magic Flute, which premiered in Vienna on September 30, 1791. Earlier that month Mozart was in Prague for the premiere of his opera La clemenza di Tito when he took ill. For the next couple of months his health gradually deteriorated and by December he was bed bound, sick and under the care of his wife, Constanze. In the early morning of December 5 he died. It is not known was illness took his life. Everything from poisoning to fever to infection has been postulated. He was buried in a common grave in St. Marx Cemetery. The house that once stood here was torn down in 1849, but a plaque on the outside wall indicates that this was Mozart's final home.