Main College is located at 18 North Bailey, adjacent to Bow Lane, and consists of the college dining hall (the Moulsdale Hall), designed in 1961 by neo-classical architect Francis Johnson, joined to a number of primarily 18th-century houses along North Bailey.

At the centre of Main College, adjacent to the Moulsdale Hall, is the Cassidy Quad.
This was originally an open quadrangle between buildings, but was given a glass roof for the college's centenary in 2004.
 Main College houses the college's major public areas, including the Junior and Senior Common Rooms (JCR and SCR), bar, libraries and gymnasium, and most college offices.

The college's croquet lawn, chapel and laundry are behind main college, along with walled gardens associated with the historic houses that make up the college.

A graffito on the Bow Lane side of the dining hall reads "Pulchra Semper" (Latin: always beautiful), and has been in place since at least the 1970s.
Main College is located at 18 North Bailey, adjacent to Bow Lane, and consists of the college dining hall (the Moulsdale Hall), designed in 1961 by neo-classical architect Francis Johnson, joined to a number of primarily 18th-century houses along North Bailey.
At the centre of Main College, adjacent to the Moulsdale Hall, is the Cassidy Quad. This was originally an open quadrangle between buildings, but was given a glass roof for the college's centenary in 2004.  Main College houses the college's major public areas, including the Junior and Senior Common Rooms (JCR and SCR), bar, libraries and gymnasium, and most college offices.
The college's croquet lawn, chapel and laundry are behind main college, along with walled gardens associated with the historic houses that make up the college.
A graffito on the Bow Lane side of the dining hall reads "Pulchra Semper" (Latin: always beautiful), and has been in place since at least the 1970s.
St Chad's College, Durham