VanDusen Botanical Garden as Queen Family Estate
Oliver walks through the grounds with Diggle discussing the strangeness of reality when they are attacked by Deathstroke.
Source: pursuit23 — Twitter
“Invasion!” Filming Locations
Oliver and some others are trapped in an alternate reality created by the Dominators where Oliver never became a vigilante.
Arrow episode “Invasion!” was filmed in Vancouver, Delta, Maple Ridge, & Burnaby in Canada.
Sandiacre Estate as Queen Family Mansion
Oliver prepares for his upcoming marriage to Laurel in an alternate version of reality created by the Dominators.
Source: HollywoodNorth.buzz
Alley (south of Richards, west of Pender) as Hunter & Norton Tailors
Oliver and his father are attacked after their final fitting and are saved by a mysterious hooded figure.
E-One Moli Energy as Laura Washington's Lab
The team tracks down Laura Washington who stole the device they need to use the alien tech and Rene confronts her with Barry & Kara.
LaSalle College Vancouver as Smoak Technologies
The group arrives at the mysterious Smoak Technologies building in the simulation to find a portal back to the real world.