"Tlachihualtépetl" is an interactive software developed for a archeological Museum located at San Andrés Cholula city, in Puebla, Mexico. The main function of this software is to show the chronological evolution of Cholula's Great Pyramid. It contains 3D models of each stage during the monument building, visitors can interact zooming and rotating the models, also it allows them to see some codex related to the story of this enigmatic pyramid.