this seems to be the most valid answer to my problem! anyway, do you know if it is complicated to setup such a foundation and where would you setup this entity?Just setup an offshore foundation which owns the property. A foundation has only a founder, council, private letter of wishes and can opt for no beneficiaries. The founder can be a law firm or an offshore company that donates the assets to the foundation - this can be done via a back to back loan. The offshore company can then be dissolved immediately after this is done. You now have an orphaned foundation.
btw, you are very helpful @Martin Everson