For the Schwarzman bldg, does it have to be a guided tour only, or can we visit it on our own? Also if we do so, what is the fee and can I buy that at the Library? Thanks.

I did it for free on my own. You have guided tours also

It's all free. Only selected area's you can't go. When you come in the building is left a information point . You can also ask them. Have fun

You can definitely do both for free. Just check the website for additional info.

It's free to the public to enter. There are lots of rooms in the building where you can sit and work or chill out

You can do both, you could check the website