Because the Austrian court refused her burial in any Catholic cemetery, Alexandra's remains remained unburied at Víziváros monastery until 1803, when her widower built a mausoleum dedicated to her in Üröm near Pest (following the late Archduchess' wishes) and after her definitive burial in this place, an Eastern Orthodox service was held in her memory. In 1809, during the invasion of Napoleon's troops, Archduke Joseph ordered that the coffin with his wife's remains must be placed in Buda Castle for precaution, with a special Orthodox chapel prepared for this purpose. Once the threat of war was over, Alexandra's coffin was returned to the Üröm Mausoleum, which became a place of pilgrimage for the local Orthodox community. During the Vienna Congress, Alexander I and the Grand Duchesses Maria Pavlovna and Ekaterina Pavlovna visited the grave of their sister.