I too cannot answer. I suggest you call the conservatory - (312) 742-7736

no.

There is no admission fee and parking on the street is free on Cannon Drive, although it is hard to find an open space.

Hola, es gratis. al menos cuando yo fui, en julio de 2016

Absolutely! There is an entrance to the zoo right by the Conservatory, near the rhinos! Also, if you wanted to start at the Caldwell Lily Pool, there is kind of a secret turnstile entrance to the zoo near the back of the pond area (I call it a secret because it took me forever to figure out where it was). That turnstile entrance comes out right by the Polar Bears I think, which is just around from the Rhino and therefore close to the Conservatory! Enjoy!

There is parking behind the zoo/conservatory just before lake shore drive off Fullerton. It's a huge lot and we had no problem parking but it's $20. + to park and it's outside. There is also a parking garage near Fullerton on Clark but I think it may have a height restriction, not sure.

There seems to be some confusion as to whether you are asking about the Conservatory which is the large glass building filled with plants or the zoo which is also part of Lincoln Park. The Conservatory was built in the late 1800s and so I believe it's safe to say those rocks are not "Disneyland" material as someone else suggested. I was so intrigued by the variety of plants in the Conservatory that I really didn't pay attention to the rocks. If you need a factual answer to your question, I would suggest contacting those who are responsible for maintaining the conservatory - the Chicago Park District. At their website there is an extensive list of their offices with phone numbers.