No matter what kind of educational and interesting places you take your kids, there are other things that children will always find significantly more intriguing.
For example, there is nothing more intriguing to a kid than a portable toilet. 
The upright blue coffins are essentially upright cesspools. I find them incredibly disgusting.
However even though you may have implored, pleaded and may be even begged your children to use the toilet before leaving home, as soon as you get to a place where there is a porta potty children they instantly need to urinate. Or worse, have a crap.
What do you do?