Frederick however was not able to assert his claims; he and his friend Conradin of Hohenstaufen were beheaded by order of King Charles I of Naples in 1268.

The Mayerling hunting lodge, a Heiligenkreuz possession since 1550, was acquired by Archduke Rudolf of Austria, the heir to the Austro-Hungarian crown, in 1886.

Immediately afterwards Rudolf's father Emperor Franz Joseph ordered the conversion of the hunting lodge into a monastery which he committed to Carmelite nuns to pray for his son's salvation.

Since the fin de siècle, Alland has been converted to a tourist resort and a spa town that is a favorite of the nearby Vienna residents.

After the Anschluss annexation of Austria by Nazi Germany, the Mayerling monastery was dissolved, the nuns expelled, and the premises turned into a forced labour camp in connection with the construction of the nearby Reichsautobahn.