Its rooms are within the Graduates' Memorial Building (GMB) of Trinity College, which it has shared with the College Historical Society ("the Hist") since the building's construction in 1902, where it provides facilities for its members such as a games and a conversation room. The Phil shares the use of its Bram Stoker Room with the College Theological Society ("the Theo"). It holds most of its meetings in the GMB's Debating Chamber with meetings having an expected audience of above two hundred being held in the larger lecture theatres of the college.