Joining the growing contemporary international urban body of works which shifts the focus to social sustainability aspects such as social well-being, the coexistence of citizens in public spaces, the integration of public transportation and the encouragement to alternative means of mobility is the winning entry of the public competition for the new Administrative Center of Belo Horizonte, capital of Minas Gerais state and the 3rd populous metropolitan area of Brazil. The winning proposal, by the Brazilian architect Gustavo Penna, manifests the physical, social, political and symbolic function of an administrative center in the context of the city it serves, Belo Horizonte. The building uses physical transparency to encourage the ideal of transparent civil conduct. Growing from a large pubic square, the building shelters an area of about 9,000m2 with a clear height of 20m. This is a much needed place for gathering in this condensed city, integrating spaces for pedestrians and preserving the architectural heritage of the city. As part of the project designed by Penna´s company, GPA&A, the city will gain a large urban park, hovering above the busy highways that cut the metropolitan center from the rear neighborhoods. “This work holds an urban dimension even bigger than the architectural one, considering it creates a sheltered square for coexistence that is among the largest in the world. It also includes a bikeway around the building that allows for cyclists to ride their bicycles to the top floor or for workers to get to their desk, ” Penna explains. The proposal was chosen unanimously by the judging commission, which considered aspects such as the quality of architectural and landscaping design, reduction of environmental impact, accessibility, esthetics and comfort, sustainability, safety and costs. The Administrative Center will consist of 13 floors and will occupy a built area of 100,000m² on the area that is currently used as a parking lot for the main bus station in Belo Horizonte. The building will shelter up to ten thousand people at a time. Aside from serving as a large area for people’s coexistence and preserving the façades of the old bus station existing on the site, which is an historically protected heritage, the project favors public transportation by being integrated with the metro system, the bus rapid transit system and the bikeway system and reducing the car flow inside the site. The building is defined as a single horizontal building, fluidly integrating spaces between, inside and from floors, inside and out. It is adequate to accommodate the various required functions and is presenting a new logical manner of accessibility to the public. As a counterpoint to the stratification that interrupts flows, artificializing the connection between people, the design creates horizontal and vertical spaces conducive to establish relationships and communication in humanized environments.