My dream barn, because I can't just pick one horse!
I would have a herd of rescue shetlands that are great at agility and are used in little kid's lessons. They'd have their own unicorn horn I'd put on them for the kids
I would have two OTTBS. They'd be my showing horses.
I'd have a barn of lesson horses, all rescues.
My first horse was a hand-me-down from my mother, a bay off the track pacer standardbred mare. She was the kindest, gentlest horse around. I'd love to own another standardbred mare like her one day.
My other choice would be an appaloosa mare. Chestnut appaloosas are some of my favorites.