the collections originally occupied the entire upper floor of playfair's surgeons' hall, which was built to house them. about half of this floorspace was converted into the college main hall in 1905, but the original playfair pathology museum next to it retained the playfair design, decor and display cabinets. it is now named the wohl pathology museum. the adjacent history of surgery museum, the dental collection and the techniques and technologies display are in adjoining rooms which were originally part of the adjacent property at 9 hill square.