Where is a transom window located?

A transom window is specifically positioned above a door or a window and is typically used to allow light and air to enter a room while maintaining privacy. This architectural feature often adds an aesthetic element to a building's design, enhancing the overall appearance while also being functional. Transom windows can be operable or fixed and are common in various architectural styles, particularly in traditional or historic buildings.

In contrast, other locations mentioned do not align with the definition or typical usage of a transom window. The roof does not accommodate transom windows in the same context, as they are primarily associated with doors or windows in walls. Similarly, a transom window is not found at the bottom of a wall or to the side of a window, as its intended purpose is to sit above an entry point, thereby serving its role effectively.