10 Film Secrets That Were Hiding In Plain Sight

5. A Medieval Version Of The London Eye Appears In One Shot - A Knight's Tale

A Knight's Tale is a ludicrously entertaining medieval adventure romp that, with its soundtrack of contemporary pop music and plentiful anachronistic dialogue, hasn't even the faintest pretence of period accuracy.

Keep your eyes peeled deep into the movie's third act, however, and you might stumble across one especially hilarious hidden gag: the presence of a medieval version of the London Eye...some 600+ years before it was actually built, and roughly 500 years before the first Ferris wheel was even invented.

It gets even better, though. You probably assumed the London Eye was simply a CGI addition in post-production, right? Nope. The $65 million movie spent a ludicrous $500,000 of its budget constructing an actual scale model of the damn thing.

There's no way that expense would be justifiable to any producer with basic business sense, but you have to admire their tangible commitment to the joke.