A horse opera setting is a western RANCH, which is a type of farm that specializes in raising horses. The term 'horse opera' is a slang term for a western movie or television show. A western RANCH typically has a large area of land with plenty of room for the horses to roam and graze. It also usually has a few buildings, such as a barn, stables, and a house for the rancher. The RANCH is often located in a rural area, away from the hustle and bustle of the city.