Visited the site of the ancient Mayan city of Chichen Itza. The site was amazing and at one point in time they estimate the city state was over 80K people living in the area. It was built in the pre-Christian era and occupied for several hundred years. https://en.wikipedia.org/wiki/Chichen_Itza
https://en.wikipedia.org/wiki/Chichen_Itza - Pictures of the "Great Ball Court" where they would play and skull platform where they would display the decapitated head of the captain of the winning team as explained by our tour guide. It was quite the site.