Kids love all the interactive science fun at the Franklin Institute, but to mix a little history in make sure you swing by the 20-foot-tall statue of the big guy, known as the Benjamin Franklin National Memorial. A multimedia show highlights his achievements and inventions in huge words and images all over the surrounding walls. Once kids have an understanding of Franklin as an inventor, they can check out a rotating exhibit of "Frankliniana," like the sword he carried to the court in France and his odometer for measuring postal routes. Then you can take them on a stroll through the inside of the Giant Heart in another part of the museum. This doesn't have anything to do with history per se, but the cool factor is through the roof. Once you're done, tell the kids that Franklin had such an interest in biology and medicine that he developed the first pair of bifocals like the ones Grandma wears.