Movies Filmed at 657 37th Avenue West657 W 37th Ave, Vancouver, BC V5Z 1K6, Canada
Along with the building across the street, this building was constructed in the 1950s for the Worker’s Compensation Board and then transferred to the RCMP in the 80s as an expansion of the RCMP’s ‘E’ Division headquarters. The building has been in control of the Public Health Services Authority since 2014 after the RCMP moved to their new Surrey headquarters and has been popular with film productions since then.
Kasnian Industrial Area
Oliver and Slade arrive in Kasnia and meet with Nylander, one of Slade's old contacts, to get some information about his son in episode 6x05 “Deathstroke Returns”.
Oliver heads to the prison in an attempt to negotiate for the release of Slade's son in episode 6x05 “Deathstroke Returns”.
Slade cuts a path through the Jackals base of operations before he finds Nylander with a bunch of goons in episode 6x05 “Deathstroke Returns”. Slade offers to join the Jackals after finding his son in charge in episode 6x06 “Promises Kept”.
4th Street Precinct (interior)
Alex, J'onn, and Manchester Black stop a pair of mind-controlled aliens from attacking a police station but when Kara joins in the fight her suit starts to fail exposing her to more Kryptonite in episode 4x04 “Ahimsa”.
Kara confronts Manchester and Hat outside the jail and finds them backed up by Menagerie and one of the Morae in episode 4x13 “What's So Funny About Truth, Justice, and the American Way?”.
Midvale High School
Kenny shows Brainy to the science lab to build a 3D printer and asks him to stay out of sight in episode 6x05 “Prom Night!”. Alex drops Kara off at prom and Kara tries to have a serious talk with Kenny but is interrupted by a meteor in episode 6x06 “Prom Again!”.
Dr. Boardman's Classroom 
The team visits an expert in Vandal Savage and learn his true identity in pilot episode “Pilot, Part 1”.
Ivy Town University 
Stein, Sara, and Jax head to the university to borrow Stein's alpha particle tracker from his younger self in pilot episode “Pilot, Part 2”.
The Legends track to the spear to the university where they find Rip Hunter shooting a movie about them with George Lucas. After Darhk and Merlyn attack the team must convince Lucas not to abandon filmmaking to save the future in episode 2x09 “Raiders of the Lost Art”.
Ivy Town Rec Center 
Young Ray runs through the government lab setup in an old building and ends up getting killed in episode 3x04 “Phone Home”.
Ivy Ridge Middle School 
Zari and Ray watch the school for young Ray and later Sara searches for Ray before being attacked by the Dominator in episode 3x04 “Phone Home”.
James Doohan Elementary
Liv spies on the Fillmore Graves mercenaries as they inject zombie blood into the vaccine supply in episode 3x13 “Looking for Mr. Goodbrain, Part 2”.
Saint Thomas Medical Center
Major scratches people dying at the hospital to turn them into zombies and save their lives in episode 3x13 “Looking for Mr. Goodbrain, Part 2”. Clive races into the hospital looking for Dale in episode 5x13 “All's Well That Ends Well”.
Floyd Baracus is reading to a classroom of kids when Peyton gets the call about the battle at the park in episode 3x13 “Looking for Mr. Goodbrain, Part 2”.
Enzo Lambert arrives with his Fillmore Graves goon who soon have to defend the studio from the Dead Enders in episode 5x13 “All's Well That Ends Well”.
Fillmore Graves Basement
Major is escorted to the basement to be turned into a feral zombie but is helped by a friendly Fillmore Graves soldier in episode 5x13 “All's Well That Ends Well”.
Lockman Aerospace 
Flynn heads to an aerospace company to steal the tape needed to hack into the NASA computer systems in episode 1x08 “Space Race”.
Source: What's Filming — Twitter
Flynn wakes up when Emma Whitmore walks into tell him that two more of their people left the cause in episode 1x16 “The Red Scare”.