Elantris is a stand alone novel by Brandon Sanderson, that is a tale about the city of Elantris, a home for god like humans with extraordinary powers. These humans rule the world, but then an event occurs, which turns the super humans into a weak and decaying people. They suffer from severe illnesses, and even the slightest bump is a pain that lasts for eternity. They go from being the beacon of the world, to being the shunned civilization of the world. One of the residents of Elantris attempts to discover the reasons for these events, and correct the wrong that has afflicted him and his people.
I just started the book yesterday, but so far so good.