Since 1987, the castle has belonged to Sûkyô Mahikari who has undertaken substantial renovation work with the assistance of Luxembourg's Service des Sites et Monuments nationaux.
On May 6, 2010, the New York Center of Sukyo Mahikari was presented with a High Performance Building Plaque from The New York State Energy Research and Development Authority (NYSERDA) in pursuing a LEED (Leadership in Energy and Environmental Design) Silver rating from the U.S. Green Buildings Council.