A large model carnival.  I put in some quarters and everything became 
active!  The carnival plays music, and nearly everything in this model 
moves, as you can see in this movie.  There are a lot of little 
movements to notice, such as the guy standing in front of the left-most 
booth and simply fanning a paddle.
<br/>There were a number of displays like this, though this one was the 
largest.