most of the campus. In 1999, Georgia Tech began offering local degree programs to engineering students in Southeast Georgia. In 2003 Tech established a physical campus in Savannah, Georgia, called Georgia Tech Savannah. Clough's administration also focused on improved undergraduate research opportunities and the creation of an "International Plan" degree option that requires students to spend two terms abroad and take internationally focused courses. In addition, Clough spearheaded the creation of a fund to make Georgia Tech more affordable for low-income students (the G. Wayne Clough Georgia Tech Promise Program). The master plan for the school's physical growth and development—created in 1912 and significantly revised in 1952, 1965, and 1991—saw two further revisions under Clough's guidance in 1997 and 2002. While Clough was in office, around $1 billion was spent on expanding and improving the campus. These projects include the construction of the Manufacturing Related Disciplines Complex, 10th and Home, Tech Square, The Biomedical Complex, the completion and subsequent renovations of several west campus dorms, the Student Center renovation, the expanded 5th Street Bridge, the Georgia Tech Aquatic Center's renovation into the CRC, the new Health Center, the Klaus Advanced Computing Building, the Molecular Science and Engineering Building, and the Nanotechnology Research Center. The school has also taken care to maintain its Historic District, with several projects dedicated to the preservation or improvement of Tech Tower, the school's first and oldest building and its primary administrative center. As part of Phase I of the Georgia Tech Master Plan of 1997, the area was made more pedestrian-friendly by the removal of access roads and the addition of landscaping improvements, benches, and other facilities. The National Register of Historic Places has listed the Georgia Tech Historic District since 1978. In the 2007 "Best of Tech" issue of The Technique, students voted "construction" as Georgia Tech's worst tradition. On March 15, 2008, Clough was appointed to lead the Smithsonian Institution, effective July 1, 2008. Gary Schuster, Tech's Provost and Executive Vice President for Academic Affairs, was named Interim President, effective July 1, 2008. On February 9, 2009, George P. "Bud" Peterson, chancellor of the University of Colorado at Boulder, was named the finalist in the presidential search; he took office on September 3, 2009. On April 20, 2010, Georgia Tech was invited to join the Association of American Universities, as the first new member institution in nine years. In 2011, Georgia Tech opened