Decades of ad hoc expansion had left Mount Sinai a knot of corridors filled with undifferentiated traffic. In solution, access was improved and circulation rationalized by a new network of bridges, stairs and dedicated elevators that horizontally and vertically separate patients from materials transport and the comings and goings of the general public. A new main entrance was created to convey a sense of arrival and also to achieve functional integration, leading to a skylit plaza and thereby connecting nearly 70% of the entire hospital complex at ground floor for the first time.