I was the guest of a Kentucky circuit trainer during the entire running of the Keeneland Spring meet in 2004.
Without question, my favorite part of Keeneland is the library.
With the new surface installed, I now have absolutely no use for that meet from a betting standpoint---and, perhaps because they opt to sell Burgoo (what the hell is that anyway?) instead of Pizza---I didn't exactly take a liking to the place---that SO MANY I've known seem to.
However, I would seriously consider taking a ride there just to haunt the library for hours and hours. I would recommend that as the one stop you must make.
http://ww2.keeneland.com/visit/Lists/Copy/research.aspx