As the result of the demolishing decision of Humberto Perea was generated, a Seminar-Workshop on CG at Universidad del Norte with the purpose of evaluate his heritage´s modern movement in Barranquilla. The Seminar´s objective was to design a methodology for documenting the building through technologies: CG and mixed realities. The methodology contents two parts; First, the building incorporated into the context with previous to the demolition and with architectural survey. And second part was developed with the Seminar - Workshop and Immersive Virtual Reality. As conclusion was demonstrated that any heritage building can be documenting to be used by researchers.