It's interesting to note that although Cortes found the civilization similar to that of Spain and praised their accomplishments, but continued to call them "barbaric" for their belief in idols and non-Christian faith.  I believe it's important to preserve for future generations, because it provided proof of other cultures for Cortes' time as well as for the modern generations.  It has given history a look into differences among lifestyles and religious beliefs.  Who was Cortes accompanied by during his travels?