Magnolia Falls, Arkansas. This is a great little waterfall that is about 26 ft tall, and with the scenic hike, is one of the better bang-for-your buck hikes in the Buffalo River area. The falls go into a deep pool and really creates a scenic area.
Blanchard Springs Caverns, near Mountain View, Arkansas - our family owns a cabin near Mountain View and we all piled in several cars one day to tour the caverns. The multi-generational group saw things from a lot of different perspectives. It was a great family fun outing.