24 Bright Street as Surgery House
Helena performs surgery on herself and is discovered by a young boy.
Source: Orphan Black — Wikia
“Effects of External Conditions” Filming Locations
Helena is super creepy all over town.
Orphan Black episode “Effects of External Conditions” was filmed in Toronto in Canada.
Former Hotel Waverley as Maggie Chen's Apartment
Helena makes Sarah come to her at Maggie Chen's former apartment.
Alley (north of College, west of Spadina) as Helena Collapses
Helena collapses in an alley and is taking into a van by Tomas.
Knox College (U of T) as Church Hideout
The police follow Helena's clues to her hideout in the basement of an old church.
Source: Orphan Black — Wikia