The Kentucky Derby Museum will close at 4 p.m. today due to a private event. The last Historic Walking Tour will take place at 3:30 p.m. and the last showing of The Greatest Race will be at 3:10 p.m. The last Barn and Backside Tour will be at 2:30 p.m. Sorry for any inconvenience this may cause. The gift shop will remain open until 5:00 p.m.