I came across this one and frankly I was not aware there was a car museum in Monaco. But since the Prince de Monaco is a car enthusiast I should not be surprised.
This is the official website: http://www.mtcc.mc/en/
I'm not sure if the spotted 400i is part of his collection or if it was part of a temporary exhibition or such. In any case it's a Ferrari 400i white on white, can't be many of them. So I wonder if this is a known one? The black striping is definately a remarkable feature as well.
Update 27-1-2018: I received the following update about this car:
And when further checking this confirms my suspicion, it's this one which is residing in the Netherlands but now without the black striping: