It is the front-most building of the university from the University Avenue. It houses many of the administrative offices for the entire university. It is situated behind the Oblation statue as a gateway or entrance position, with four columns supporting the main hall itself. The building is classified as eclectic architecture. Eclectic Architecture can be described as using the elements of different historical styles and multiple theories in a single structure. It is the combination of variety of influences. Quezon Hall was among the buildings constructed at the Diliman campus in the early 1950s, following the university's exodus from Padre Faura to Diliman in 1949. An imposing colonial structure at the end of the University Avenue, it was completed in 1950. A marker from the National Historical Institute (NHI) is located in its front lawn along with the oblation statue. The only carillon tower in the Philippines and in Southeast Asia that is manually played by a clavier or a wooden keyboard, the U.P. Carillon towers about 130 feet tall. The U.P. Carillon was originally constructed in 1940 by National Artist Juan Nakpil, Conservatory of Music director Ramon Tapales and UP President Bienvenido Gonzales with an initial idea of building a concrete structure that may tower the grounds of the university. Several years later, on August 1, 1952, the tower was finished and dedicated as the U.P. Carillon. Forty-eight bells with four octaves were installed by the Dutch carilloneeur Adrian Antonisse, with the efforts laid by the U.P. Alumni Association. These bells were forged by Van Bergen Co. in Netherlands and the largest of them weighs five tons, where the total cost of construction summed up to ₱200,000. Apart from playing the U.P.'s anthem "UP Naming Mahal" (U.P. Beloved), the Carillon tuned many music such as the "Magtanim ay Di Biro" (Planting Rice, a Filipino folk song) and The Beatles sounds. One of the most important tunings of the Carillon was when it played the socialist anthem "The Internationale" at the 1971 Diliman Commune. During this time, U.P. students declared the university as a republic and as a separate entity from the Philippines. Due to age and rust, the Carillon ceased to play in 1981. In 1988, the last symphonies of "U.P. Naming Mahal" and "Push On U.P.!"