Visitors can find the Outdoor Exploratorium at Fort Mason between San Francisco’s Aquatic Park and the Marina District, beginning on March 13, 2009. Dotted along the waterfront at Fort Mason Center and in the adjoining 55-acre National Park of Upper Ft. Mason, these exhibits harness the wind, the waves, marine life, and the man-made and natural environments in this urban waterfront site. The Outdoor Exploratorium is for noticing and learning, a place to deepen understanding of the natural world, and an opportunity to apply the scientific principles of observation and experimentation to the outdoors — all for free.