President Obama and Former President Clinton Tour Building

President Barack Obama and former President Bill Clinton listen as Gary Le Francois, Senior Vice President and Director of Engineering, leads them on a tour of the Transwestern Building in Washington, D.C., Dec. 2, 2011. The 240,000 square foot office building is undergoing renovations to the façade and internal systems that are expected to raise their ENERGY STAR rating to 95 (out of 100). (Official White House Photo by Pete Souza)

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• December 2011: Photo of the Day