According to Baudrillardians, Disneyland appears to be imaginary in order to make us think the rest of America is real.

Signs appear to have meaning and can be read in any number of ways. Even if the signifier is not necessarily fixed to any particular signified. "Often an attempt for meaning masks an absence of meaning" [source: Kellner, D., (ed.) (1994). Baudrillard: A critical reader. Oxford: Blackwell, pg 126-127]