I live in Owensboro (Daviess County), Kentucky. Our local quilters with the Daviess County Extension Office started working on Barn Quilts last August and have well over 30 up already with contracts for another 10 or 12 to be finished soon. They have a Facebook page; Daviess County Barn Quilts where you can see pictures of them all. Kentucky has a large collection of Barn quilts in many of its counties. You can go to the Kentucky Arts Council's website and find maps for them all or just google Barn Quilts in your state to see if there are any there.
My husband and I love to take trips just to look for them and photograph them.
I was in Shipshewana area last week, where the local quilt shop owner told me they were going to start working on getting a Barn Quilt trail going in that area too.
Don't they just make you smile???