We asked mexicans to show us "Where is the limit of your city?". They leave our resarch looking for the construction of the idea of the limits that a person have about the city where they live and how that subjectivity changes the circulation space in the citie. These limits subjective, cultural, behavioral, religious, political, aesthetic, etc ... In a second part of the project the Mexicans led us to the places where they believe  are the limits of the city.