Pennsylvania - Philadelphia, World's Largest Pinball Machine

The Franklin Institue Science Museum
Philadelphia, Pennsylvania

"The World's Largest Pinball Machine"
The world's largest pinball machine invites visitors to start a billiard ball on a roller coaster course.  The ball sets other parts of the machine into motion, demonstrating many transformations of mechanical energy and a delightful chain of physical events.
1978

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The Franklin Institute (named after the noted American scientist and statesman Benjamin Franklin) is a museum in Philadelphia, Pennsylvania, and one of the oldest centers of science education and development in the United States, dating to 1824.