A large Ponzi automatic revolving door welcomes guests of the Hotel Cosmopolitan in Bologna, an important hub for an international public of users interested in visiting the city or for a business stay, a short distance from the Bologna Fair. The Ponzi automatic revolving door creates a favorable microclimate in the hall, preserving the heat in winter and the coolness in summer. The revolving entrance is the conscious choice to obtain a highly sustainable building, limiting the temperature variations between the inside and outside of the rooms, providing a positive energy balance, drastically reducing air currents and temperature changes. Ponzi is particularly attentive to the responsible use of resources, exploiting the advantages offered by technology without causing damage to the environment. Furthermore, given the high traffic in the hotel, the revolving door is particularly suitable both for pedestrian traffic but also for mixed traffic of people and luggage, in the case of large diameters. Each project can be defined as "Taylor Made" as it is highly customizable according to customer requests. The Ponzi Tire technical doormat completes the automatic door as it removes dirt and wet from guests' shoes and is used in environments where there is a lot of people passing through.