“Alex in Wonderland” Filming Locations

Having difficulty dealing with the anger brought up by her father's death, Alex travels into Obsidian Platinum where she takes on the role of Supergirl but soon finds herself getting lost in the machine.

Supergirl episode “Alex in Wonderland” was filmed in Vancouver in Canada.

Guildford Town Centre as Mall Simulation

Alex lands in a mall where another person is playing music and chats with someone about VR before stopping a Dracokardosian attack.

E-One Moli Energy as Luthor Corp Naval Solutions

Alex is taken by her teenage self to the last place she saw her father in an effort to get her to confront her reality.