More than 1,600 years ago, close to the southeastern coast of the Korean Peninsula, laborers were hard at work building a palace for a fledgling kingdom.
They finished the foundation layer of the massive western rampart and then paused before beginning the next construction phase, a stone wall. The foundation, made from packed shells and earth, was complete from an engineering standpoint.
But the ancient builders believed something more was needed to protect the structure: human sacrifices.
Read more here courtesy of AtlasObscura.com