An urban cache in a very busy urban location.
His homeworld was a planet called Krypton, a dying world. His parents, Jor-El and Lara hoping to save their son, placed his birthing matrix into a rocket and sent it to Earth so that he may live. Moments after the rocket left Krypton, the planet exploded taking his parents and their entire civilization with it. Now the only knowledge of the planet rests in a memory crystal that was sent along with their son.
Upon entering our solar system, the rocket headed for the mainland of the United States and crash landed in Kansas near a town called Smallville. Two farmers named Jon and Martha Kent who named the child, Clark, found the young boy. As Clark grew older he gained in strength by absorbing energy from our sun. By the time he was an adult he had gained the ability to fly, fire heat vision from his eyes and see through walls.
From that point, he became the superhero we have all come to know and love. He became SUPERMAN!
You are looking for a small plastic box hidden away from prying eyes and Kryptonite.
Take your time. Ring a friend but do not get caught.
The Green Goblin 
and other super evil ones 
are on the prowl so be alert. Australia needs lerts 
.