Pelli Clarke Pelli Architects has unveiled images of a colourful National Children’s Museum in Washington DC

The 150,000ft2 building will boast an assortment of green features – a wind turbine, green walls and roofs, and sun reflectors to illuminate the building’s interior with natural light. US architects Amaze Design, Roto Studios, and Aldrich Pears designed interiors for the building, which is scheduled to open in 2013.