from damaging the site. Access to parts of the site is restricted during events such as the Quetzalcoatl Ritual. Certain large fireworks have been banned by the city and the Catholic Church because they cause serious vibrations in the pyramid's tunnels. Some of the land around the pyramid has been bought by authorities and made into soccer fields, and sown with flowers to create a buffer between the construction of homes and the pyramid. See also Cholula Mesoamerican site List of tallest structures built before the 20th century Notes References Further reading Buildings and structures in Puebla Archaeological sites in Puebla Archaeological museums in Mexico Museums in Puebla History of Puebla Tourist attractions in Puebla Pyramids in Mexico Cholula, Puebla