The Thunderbird

Disney Imagineers have long used the practice of forced perspective to make theming and architecture look bigger and grander than in physical dimensions.  By building upper floors at increasingly smaller scales or shaping features that are supposed to appear farther in smaller segments, this enhances the illusion that things are larger and more epic.  Except when real life nature decides to interfere, like the bird on the spire of the Big Thunder Mountain rockwork on the left in the photo below.  At that point, the illusion is compromised, because there's something to compare for scale!  Ah well, you can't control everything!

Big Thunder Mountain Railroad at Disneyland Paris... and a force perspective-ruining bird on top of one of its spires.