How to recover and transform the relationship that exists between man and nature through the cosmos in architecture? Most people who live in cities and towns in our days, they perceive that the night sky is typically a black blanket with certain stars here and there. The day to day of the cities, has marked us in terms of light pollution, restricting the view of the cosmos through the clouds, altitude, light environmental and a number of other factors. The project proposes an architectural proposal that originates from an initial opportunity that offers a territory that has a natural wealth, which invites the temporary inhabitant of the project to live an experience, that connects it with the mystery of a nature primitive as it is the Cosmos, through the star tourism. Defining itself as a type of tourism that satisfies the interests of astronomers and astronomy enthusiasts. The star tourism requires the study of a lighting map. Locating in Colombia, we can determine that the department of Boyaca offers a window into the universe, because of its sky quality. This because? Because to determine the quality of the sky, scales were taken predefined and internationally accepted such as the visual magnitude or scale of Bortle, consulting maps of light pollution. The dark sky scale of Bortle measures the brightness of the night sky. This region offers already predetermined touristic circuits, in which there are points of attractive to tourists, as shown in the diagram. For this reason, the project seeks complement and enhance these circuits. SAW Taking into account the quality of the sky and the predominant tourist circuits, the project It is located in the region that connects Villa de Leyva and Santa Sofia. So that it moves away of the city centers, allowing to create a link between man and the cosmos. It takes up two concepts that determine the project. The Muiscas population that lived in the region, they studied and transformed the municipality into an observatory astronomical, in pre-Columbian times. And the Greeks who converted the astronomy from a myth to a science. The Astroturistico complex is built from the transition from a tour principal, that in its receiving or access is shown a user interaction with a common building of a city, in which as it is covered reveals different spatial qualities to the user. And in which a closed building is projected in its limits horizontal, but that opens to redirect the attention of users to the cosmos. Continuing with the tour, it gradually opens, allowing as the user is related in an increasingly direct way with nature. Building an architecture that connects with nature. Allowing it to make a transition between man, nature and the cosmos.