In the heart of Historic Mexico City, on Zocalo Square and partially buried under the Cathedral of Mexico City, is an ancient Aztec temple, archaeological site, and museum. The temple was active from 1325 until the Spanish destroyed it in 1521 to make room for the Cathedral. Fortunately, much of the site still remains.
The tradition of this temple is deep with human sacrifice and consecration with human blood. If you don’t want to read about that, you should stop reading now and visit our Teotihuacan post instead.