It was in this hunting lodge that, on 30 January 1889, he was found dead with his mistress, Baroness Mary Vetsera, apparently as a result of suicide.
Exactly what happened is unknown, but on 31 July 2015, the Austrian National Library issued copies of Vetsera's letters of farewell to her mother and other family members.
The letters — written in Mayerling shortly before the deaths — state clearly and unambiguously that Mary Vetsera was preparing to commit suicide alongside Rudolf, out of love.
[1] After the deaths of Rudolf and Vetsera, Emperor Franz Joseph, who wanted to endow a new church building, had the hunting lodge changed into a convent which then was settled by nuns of the Discalced Carmelite Order.
[2] This center, the restored tea pavilion and some other rooms with objects from the 19th century now form the exhibition of the "Museum Altes Jagdschloss Mayerling".