Kids 16 and under are always free with paying adult. The reason why kids 16 and under are free is 3-fold. Firstly, if more children are not educated enough in historic preservation then they won't know to be appalled when a historic building is razed; secondly, to encourage more outdoor fitness activites to combat obesiety in children; and thirdly, it saves money for familes on a budjet (especially on vacation)! All of these reasons are very important to me.
Best in health,
Leigh Rush Olson