• Owned through a matryoshka doll of entities including an Austrian company and a trust in Liechtenstein.
• Until 2017, that Liechtenstein establishment was owned by a British Virgin Islands firm owned by Evgeny Shuvalov, Shuvalov’s then 24-year-old son.
• Its current ownership is unknown.

Private jets owned by companies linked to Shuvalov have recently flown to airports near the Austrian castle, which may suggest he or his family continue to use it