The Nationals Stadium, the present ballpark for the Washington Nationals is here to make a difference with its eco-friendly sports. Dubbed the Nationals Park, the $611 million baseball stadium includes energy-efficient lighting, low-flow water features, and a 6300 square foot green roof that covers the concession area. Other interesting features embrace a water filtration system built directly underneath the stadium, which is made using sand filters pollutants from the water. The unique filtration system also separates water used for cleaning the ballpark from rainwater that falls on the ballpark, treating both sources before releasing all the water to the sanitary and storm water systems.
http://www.greendiary.com/entry/worlds-most-beautiful-eco-friendly-sports-stadiums/
