Before I begin looking here, I need more information. For instance, can you be more specific about "a chat with the front desk staff?" Presumably a receptionist would not have extensive information about the company or the GE corporate university. Exactly what is it that you mean?
What would you hope to accomplish/learn in a visit?
The GE Management Development Institute at Crotonville is a closed campus. You can try calling them at(###) ###-#### The receptionist should be able to contact anyone who is on campus at any given time. It is rare for anyone other than GE employees to be invited onto the campus. About 9,000 employees rotate through the campus each year, so it may be that the person you are looking for isn't there at any given time. You could also try sending the person a note. However, just walking in would likely have you escorted back to your car by security.
Please let me know if you have questions.
I will opt out since there is no web link to Crotonville's visitor policy.