I like the look of an old wooden barn with cobble stone base. Just something about it aesthetically that is pretty. For practicality I prefer a steel or aluminum barn. Our run in shed is galvanized with wood on the walls where the horses are. I was fearful of them kicking through the metal too.
I see a beautiful old barn like this falling down and it makes me want to cry
"Until one has loved an animal, part of one's soul remains unawakened..."
- Anatole France