 In 2006, the Arnold School opened its new $26 million LEED-certified research facility on Assembly Street with additional space in the Discovery I building on Greene Street.USC's Darla Moore School of Business, whose undergraduate international business program ranks number 1 in the nation, is relocating to the Innovation District, at Assembly and Greene Streets, to a new $90 million structure scheduled for completion by December 2013.The carbon-free, LEED-certified, 260,000 square foot facility will feature state-of-the-art classroom and meeting space, modern faculty and staff offices, a 500-seat auditorium for academic events and performances, and a rooftop terrace and pavilion.