Revolving doors are a type of entrance commonly found in buildings like hotels, offices, and shopping centers. They consist of several panels that rotate around a central axis, allowing people to enter and exit without creating a significant draft. This design helps maintain indoor climate control and reduces energy costs by minimizing the exchange of air between the inside and outside. These doors are often made of glass and metal, providing visibility and durability. They can also enhance security by limiting access points. Revolving doors are particularly useful in high-traffic areas, as they allow multiple people to pass through simultaneously, improving flow and efficiency.