Final answer:
The Old Minnehaha County Jail has wall dormers, which are extensions of the wall that break through the roof slope and often come with various styles such as gabled or hipped roofs.
Step-by-step explanation:
The Old Minnehaha County Jail, which is a historical building, features a particular style of wall dormers on its front portion. A wall dormer is an upward extension of a wall that breaks through the slope of a roof, typically featuring its own roof and window(s).
Although the specific architectural details of the Old Minnehaha County Jail's wall dormers are not provided in the question, wall dormers commonly appear in a variety of styles such as gabled, hipped, or shed types. These architectural elements are significant as they can influence the aesthetic and historical value of a building.