New Westminster City Hall as City Hall
Curtis is attacked by Prometheus while arguing with his husband outside the Christmas party.
“What We Leave Behind” Filming Locations
Prometheus steps up his attacks against Oliver and his ally is revealed.
Arrow episode “What We Leave Behind” was filmed in New Westminster, Vancouver, & Burnaby in Canada.
Canada Post Main Office as Claybourne Pharmaceuticals
The team follows the clue left in Curtis to one of Oliver's old targets back during his days as the Hood and Evelyn reveals her true loyalties.
Vancouver Film Studios as Rooftop
Thea joins Oliver in the search for Billy and discusses Oliver's past actions.
Canada Post Main Office as A.K. Desmond Group
Oliver heads to the offices of the company he assaulted four years ago and finds the building staged like the aftermath of his attack by Prometheus.