A vestibule is a small space or entryway located between the outer door and the inner part of a building. It serves as a transition area, helping to regulate temperature and reduce drafts when entering or exiting. Vestibules are commonly found in homes, offices, and public buildings, providing a buffer zone that enhances energy efficiency. In addition to their practical function, vestibules can also serve aesthetic purposes. They often feature decorative elements, such as lighting fixtures or artwork, that create a welcoming atmosphere. Vestibules can also provide space for coat racks or shoe storage, making them functional areas for visitors.