If realy bad things happen in a structure (a recent example is the Castro house, where three young women were kept as sex slaves), the structure would seem just "creepy" to me.

Human sacrifices, and human slavery to serve "the gods" is not a historic myth, it's a reality. IMO, the structures, no matter how advanced in history, should be a reminder of inflicting human folly of human suffering for a "relligious cause" - versus making them a monument revered for " good architecture", with "the rest of the story swept under the carpet".