Heres what we learned…

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Moving the sets from L.A. to Vancouver.

Nobody knows expect for you now.

Karas loft was pretty cut and dry.

I gave those details to construction team, and we rebuilt it.

Harron said that Karas Loft is exactly the same, save for the exclusion of a bathroom.

I dont put bathrooms in sets, Harron said.

I believe in theStar Trekmethod.

Did you notice the changes between Catco Season 1 and CatCo Season 2?

Also, theres a window missing.

So things had to be moved and shuffled around, but just enough that no one would catch it.

Of course, some of the set design changes were narrative as well.

Harron gets inspiration from some ofhisfavorite sets.

I loved that set just because how much more open it was.

It felt like you were in a big, cavernous place.

Two levels, the hallways interconnecting.

Because it gives life to the set.

you might keep the moment moving, rather than everyone, Take your seats.

Were gonna talk about this.

Creating the Alien Dive Bar set.

[The Alien Dive Bar] was actually where the stunt department was originally.

So I said, I got a perfect place to put a set.'

Thus the Alien Dive Bar was born.

You might recognize elements of the Alien Dive Bar set from another CW show.

For reference, here isThe Tomorrow Peoples Chinese restaurant set.

In creating the look of the Alien Dive Bar, Harron wanted to create a seedy feel.

You might catch something or something might catch you.

(Theres not.)

Its very cool because the shows going in way different directions than last season.

Weve got aliens coming in here.

Weve got a variety of different prosthetic-ed people who are becoming regulars.

One of my favorites is Fishhead, who is the guy that drinks WD-40.

If youve noticedthe Interlacpeppered throughout the Alien Dive Bar set, then you have Harron to thank for that.

When they first walked in the bar, Andrews first thing was, That doesnt say anything offensive?

What language is it?

What do the Interlac phrases say?

A little bit more grounded in reality, as opposed to Dr. Evils lair …

The balcony was my first driving point for the set.

We never got to see Supergirl land in the DEO last year.

She always came around a corner.

Well, she flies.

(For a closer look, check out the photo gallery at the top of the article.)

It took eight weeks to get shipped into the set.

And I got a big round of applause.

Next time you watchSupergirl,spend a little time admiring the production design.

Its out of this world.