While I was visiting the Evaluation Gardens at the Chicago Botanic Garden a couple of weeks ago, I stopped in at the Daniel F. and Ada L. Rice Plant Conservation Science Center.
The Center provides laboratories and teaching facilities for more than 200 Ph.D. scientists, land managers, students and interns. It is also home to a doctoral program in plant biology and conservation with Northwestern University. The Center covers 38,000 square feet and a viewing gallery is open to the public.
A stairway leads to the second floor where a 16,000 square foot Green Roof Garden is also open to the public. From here you get a good view of the nurseries where they are preparing hundreds of plants for autumn planting and displays.