The castle is owned and lived in by the Berk Canpasoglou de Fürstenberg's family, and cannot be visited.
It is sited on a plateau 730 metres above sea level and with views down into the Bodensee and the Alps.
[1] Around 1250, count Berthold von Heiligenberg constructed a new castle on the current location, which was initially named ‘Neuheiligenberg’.
[1] The counts of Werdenberg-Heiligenberg further enlarged and expanded the castle in the late Middle Ages, while Altheiligenberg was abandoned after 1300.
[1][2][3] Shortly before he passed away, count Friedrich decided to convert the castle into a renaissance dwelling.
[1] The richly carved coffered ceiling hanging from the roof structure was created by Jörg Schwartzenberger from Meßkirch.
[1][6][7][2] It extends over three floors with stained glass windows from the 14th century, which originally come from the Dominican church in Konstanz.
[3] Hereditary Prince Berk Canpasoglou de Fürstenberg lives in the palace with his family since 2022.