https://www.wired.com/story/hospitals-quickly-reshape-treat-covid-19-patients/

Until mid-March, the emergency room entrance at Baystate Medical Center in Springfield, Massachusetts looked much like the entrance to other ERs: an illuminated red “EMERGENCY” sign mounted on a brick facade, above an open space where cars and ambulances could unload patients.

By the end of the month, part of that once-open space had been enclosed by temporary walls. Two swinging doors led to a new entrance, with a registration desk protected by a pane of glass. Beyond that, a series of cubicles waited, spaced 6 feet apart. Hand sanitizers dotted the walls. One room was reserved for testing. Health care workers were trained to travel the new hallway in one direction, to reduce crowding. A portable HVAC unit circulated air in and out.