This garden is situated on 385 acres to the North of Chicago. It contains 25 display gardens and four natural habitats. Google has it rated at 4.8 stars out of 5. I am unsure of how it lost .2 stars.
One of the nicest gardens in the U.S. Plants are all cleared marked with names. The place is well taken care of. If you are in the Chicago area, go and see it. On your drive north stay beside the lake on Sheridan Drive and you can see spectacularly landscaped homes on the way there.