If it can be avoided you SHOULD NOT DRIVE to 24 Hour Comic Day. But I know, sometimes it's unavoidable. The MN CENTER FOR BOOK ARTS does have a FREE LOT, but with over 50 people signed up and everything else that goes on at MNCBA on any given Saturday, space will fill up fast. There are ramps and such around, but the best deal is the block behind Book Arts--3rd St S--where meters are only 25 cents an hour! So if you get stuck with that--sorry, but you can always move your car back to Book Arts later (and especially move it there overnight).