Dave Land is a theme park owned by Dave, and is themed entirely around him as all the attractions and everyday objects around the park prominently feature Dave's face.
Little is known about the park, other than its popularity among visitors. Interestingly, even Pim is unaware of who Dave really is. The park was visited by Charlie, Pim, and Desmond in "Desmond's Big Day Out" as a last resort in an attempt to cheer Desmond up.