I didn't know that, but I see it on the Google Map.
Also, there's a little portion of Kentucky in the extreme southwestern corner which is only accessible by passing through another state, TN or MO.
Also I see on the map there's a little bit of Kentucky that's actually WEST of the Mississippi River. I didn't know that either.
All along the Mississippi there are bits of land that are separated from the rest of their state by the river, because of the river changing course since the state boundaries were set.