 The college buildings on the main site are arranged in three quadrangles, the first quadrangle containing the oldest college buildings and the third quadrangle the newest. The quadrangles are often referred to as "First Quad", "Second Quad" and "Third Quad" for short. As is often the case in Oxford colleges, the rooms in the older buildings are connected to the quadrangles by a series of staircases, rather than horizontally to each other by internal corridors. The staircases are numbered (sometimes using Roman numerals): staircases 1 to 5 are in the first quadrangle; staircases 6 to 13 in the second quadrangle; and staircases 14 to 21 in the third quadrangle. The stairs on staircase 3 were replaced with stone steps in 1878, setting what one historian of the college (J. N. L. Baker, a fellow of the college from 1939 to 1971) termed "an unfortunate precedent", since the "ugly pattern" of staircase 3 was adopted when repairs were carried out to staircase 13 after a fire in 1882.
