Incredible museum, at the moment they do not have ...

Incredible museum, at the moment they do not have exposed two very parents pieces of their collection that are the Rain Room and the piece by James Turrel.
I think they are waiting to install them in the new building they are building.
Anyway, it is very worthwhile to shop around and get to know the piece they have of Richard Serra and Levitated Mass.
It is also worth going to see the piece by Donald Judd and Alexander Calder's mobiles to the garden of the sculptures.