[Secret 5 is lost, but from the comments it seems that the secret maker expressed a desire to live in the city of Midgar, from the videogame "Final Fantasy VII". Midgar is divided in two by this super huge metallic plates: The rich people live above the plates, and the poor people live below. Oh, and it was built and run by a company that has monopoly on energy on nearly the entire world. It's as terrible as it sounds.]
Secret 5 - Final Fantasy VII