How do i make horse sheds/barn/pen?

No clue whats right name for it to just to sesrch for it.

Horses are holy animals for my ideology, so want to make best housing for them. Idk kf research gives "beds" for them or only option is sleeping spot. Or anything at all. Just making house with fence and hay plant zone inside. Idk what else am i supposed to do for "luxury" option