The falls are a pretty long drive from the highway and it costs $7 to get in. The water was beautiful and I stood outside listening to the sound for quite a while, but I am not sure if it was worth the time and money to get there.
This town was so charming. I stopped and walked around for more than an hour to look at all the world largest things. Casey IL was one of the best parts of my road trip- I highly recommend stopping there. The WW cafe next to the wind chime is fantastic - very cute atmosphere and good food.
The catsup bottle is big, but it looks like the 'worlds largest' because it is so high off the ground. A little bit underwhelming but still sorta fun.
The murals are NOT WHERE THE GPS says they are. Make sure you look them up to get a more accurate location before you go. They are difficult to view while driving (without driving obnoxiously slow) so I would recommend making a stop out of it and walking around.
This bridge is past two or three 'residents only' signs. I drove around the signs, and the bridge was pretty cool. Don't go too far past the bridge though, because I felt like I was trespassing on someone's neighborhood.