While he library has been mentioned jest, I really do like the old section of the library, with the huge Grant Wood murals,
When Tillage Begins, Other Arts Follow. When in the library, I would make sure that I walked through there, even if my business that day was nowhere near it. As a farm kid, 'agriculture' meant all the things I disliked ... walking beans, sorting hogs, stacking bales, yadda, yadda. To go to college and walk into the historic part of the library with bigger-than-life paintings that depict the beauty and necessity of agriculture, was simply eye opening for me. I've always admire Grant Wood's style, so combine that with the subject mater and well, I fell in love.
Maybe this all ties into my love for the Land Grant university system - or at least for me, it's how I visualize the tenets of the Land Grants.
So there you, one my absolute favorites is the old part of Parks Library.