After the death of GD Mikhayl Nikolaevitch in 1911, his memory museum was founded in his private rooms.
His two sons - Georgy Mikhaylovitch and Nikolay Mikhaylovich lived there till revolution.
They were shooted at Petropavlovka on 28th January of 1919.
Nikolay Mikhaylovitch was also a great historian.
Now the palace is knows as Institut Vostokovedeniya - Institute of Oriental Studies.