“The Exploratorium is a twenty-first-century learning laboratory, an eye-opening, always-changing, playful place to explore and tinker. For more than forty years, we’ve built creative, thought-provoking exhibits, tools, programs, and experiences that ignite curiosity, encourage exploration, and lead to profound learning.” – From the Exploratorium website (www.exploratorium.edu) The Exploratorium is the ultimate playground for the mind, … More San Francisco: The Exploratorium