I missed a brilliant suggestion on Halfbakery earlier this year: An H.P. Lovecraft theme park! I can think of a zillion places in rural Massachusetts or Rhode Island where we ought to build this dank, foggy amusement park whose presence is marked only by rotting signs and surly, fish-faced locals.
Whirligig, who contributed the half-baked idea, suggests:
He also notes that the amusement park should include a traveling show on a floating barge called "The Lost City of R'lyeh," which can be "special ordered to terrorize a coastal town and appears at whim in the open sea along the way."
Excited commenters quickly chimed in with their own embellishments for the amusement park. Zen-tom suggested, "Occasionally, achild should dissapear, last seen by the shambling and misshapenmaintenence staff." And oneoffdave said, "I'm looking forward to the non-euclidian roller coaster." Me too!