“Call to Action” Filming Locations

The Children of Liberty drop a manifesto over the city the day before Thanksgiving as James tries to get closer to the group despite Lena's misgivings.

Supergirl episode “Call to Action” was filmed in Vancouver in Canada.

Del Mar Inn as Del Mar Inn

Brainy effortlessly defeats a band of Children of Liberty thugs who find him erasing the anti-alien symbol from the door of a building.