The Planes

The planes have a very similar layout to Forgotten realms. There is the material plane, with Akna at the center, thought to be the dead body of the goddess. Theres then the feywild and shadowfell, which are pretty different from the forgotten realms. They're often described as "the wings of Akna." One in complete chaos and home to the fae, the other complete shadow and emptiness, home of the shadow people. Outside of that is a layer of the astral plane which connects all worlds. Then the 4 elemental planes, then the different routes to the afterlife.