Campus. Since then, NC State has focused on developing its new Centennial Campus. It has invested more than $620 million in facilities and infrastructure at the new campus, with of space being constructed. Sixty-one private and government agency partners are located on Centennial Campus. NC State has almost 8,000 employees, nearly 35,000 students, a $1.495 billion annual budget, and a $1.4 billion endowment. It is the largest university in the state and one of the anchors of North Carolina's Research Triangle, together with Duke University and the University of North Carolina at Chapel Hill. In 2009, NCSU canceled a planned appearance by the Dalai Lama to speak on its Raleigh campus, citing concerns about a Chinese backlash and a shortage of time and resources. NCSU Libraries Special Collections Research Center, located in D.H. Hill Library, maintains a website devoted to NC State history entitled Historical State. Campuses Main campus NC State's Main Campus has three sub-campuses: North Campus, Central Campus, and South Campus. North Campus is the oldest part of NC State and is home to most academic departments and a few residence halls. Central Campus is mainly residence halls, cafeterias, gymnasiums and student support facilities. Finally, Greek Court, the McKimmon Conference and Training Center, and student park-and-ride areas are found on South Campus. North and Central Campus are separated by the North Carolina Railroad. Pedestrian tunnels allow students to commute between campuses. Central and South Campuses are separated by Western Boulevard, a major downtown artery. University Housing divides Main Campus into West, Central, and East Campus for residence hall purposes. West and Central campuses are divided by Dan Allen Drive, while Central and East are divided by Morill Drive and Reynolds Coliseum. Architecturally, Main Campus is known for its distinctive red brick buildings. Brick statues dot the landscape and the University Plaza, colloquially named "The Brickyard", in North Campus is nicknamed for its paving material, most sidewalks are also made from brick. The Brickyard and sidewalks also contain white brick mosaics of the athletics logo and other patterns. The Memorial Belltower, located in the Northeast corner of North Campus, serves as the signature of NC State and appears in the NC State Chancellor's Seal. It was constructed as a monument to alumni killed in World War I. The granite tower, completed in 1937, is 115 feet (35 m) tall. As a tradition, the Belltower is lit in red at