An out of the way drive

So I know I am going about this all wrong but I have to be where I have to be so I am about to make a big circle .
So I am in Texarkana I have to go to Little Rock so stayin there a bit but then I have to go back down to Shreveport, I KNOW I KNOW with gas but I had to do it this way the thing is I want to stop one day between Little Rock and Shreveport Even if I have to go over a bit but not too far its only for one day. A place with a nice thing to see do or experience.
Any suggestions?
I decided to go to Pine Bluff to see the murals . Maybe do the Art Musuem.
ANYTHING A MUST SEE OR DO?