Girl who was killed as an offering to the Inca gods sometime between 1450 and 1480, at approximately 11–15 years old.
best-preserved mummy ever found, with internal organs intact, blood still present in the heart and lungs, and skin and facial features mostly unscathed. No special effort had been made to preserve her and 500 years later still looked like sleeping children
YouTube : 500 year old girl (Click Link For Video)
There were a bunch of toys (offerings) laid out around her that were also part of the display. She's kept inside an air controlled container.
I believe there were three children. The other two showed signs of damage from being struck by lightning sometime in the past couple hundred years.