Located about 18 miles from San Miguel de Allende is the archaeological site of Canada de la Virgin. It represents an important part of pre-hispanic mexican culture where many historical relics have been found.  There are 7 pyramid structures of different sizes and styles that were built around 540 A.D.  by Toltec and Chichimeca architects.  According to experts,  the site was designed and configured in such a way  that all structures would  be symmetrically aligned with cosmic cycles. Hence, this pattern of construction allowed the pyramids to serve as sky observatories among other things. In addition,  Canada de la Vrigin is also part of a nature preserve offering a variety of recreational activities such as camping, hiking, horseback riding and astronomy tours,  as well as  a venue for special events.