I'm entering this thread a bit late - sorry if I'm repeating previous candidates: the Lunatic Asylum at Colonial Williamsburg and the Army Pathology Museum at Walter Reed Hospital, DC. They don't fall under the criteria mentioned in the original post - but they certainly do have a sinister feeling to them. And isn't there something in Budapest? I seem to recall hearing something about Hungarian Ghoulish... But the most truly ghoulish, if we're unlucky enough to have it built, will be Disney's America! Allan Janus [log in to unmask]