Realm of
Morpheus, aka
The Sandman, dreamlord in
Neil Gaiman's quintissential
comic book series. It is the home of all
dreams, from
lusts and
fantasies to horrible
nightmares.
All of the
books that have ever been written are there, as are all of the books that have
never been written.
The
Dream lord lives in a
castle at the heart of the Dreaming.
All
mortals visit the Dreaming when they sleep. That is the only time they are allowed.