The umbilicus that runs from the front door of the Warehouse to the main office is actually a hallway in a Toronto hospital. Allison Scagliotti mentions in the Season 1 commentary that the hospital that contains the umbilicus hallway is the same hospital where, many years previously, Saul Rubinek's father passed away. Years after his father's death, Saul Rubinek would return to the hospital to film the death scene of his character Artie Nielsen.