I'm sure the interior of the visitor center is neat, but unfortunately though we visited on a Saturday afternoon it was locked. The outside however is very cool, you can walk around the outside of the roundhouse and see abandoned trains and tracks, including the round turntable. Worth a quick visit if you're in Evanston.
December 2021
We rented it for work meetings, its a great space. Its quiet, even though there are train tracks 100 ft away. The foot and a half thick brick walls block everything out. The only issue we had were the tourists, I mean it is a visitor center. We put up a sign that said closed for private function and it stopped the interruptions.