See here.
Man, imagine one of THESE babies getting hit by a jet. Although it might take a whole fleet to make a dent, dunno.
Looking at those runways - you really don’t want to land short.
And parking for 250,000 vehicles - what’s that like at quitting time?
I guess it would look like a classical Blues Brothers car pile up on steroids.
On the other hand a building with a Zeppelin parking lot is freaking awesome!, you have no idea what troubles I go everyday to find a spot to park my Zeppelin.
And my combat Zeppelin…
Typical of predictions of the future. They already knew in 1939 that you couldn’t moor a dirigible to a skyscraper in a city (they failed miserably the one time they tried at the Empire State Buildgin), yet they show it here.
OK, so it’s impossible. I still want one, though. 
This is where much of the inspiration for the “sets” of the film Sky Captain and the World of Tomorrow, here and the 1939 World’s Fair.
It was used but impractical; it was also discovered that passengers weren’t very comfortable with walking down a narrow gangplank 1250’ above NYC.
Couldn’t you just, you know… use a wider gangplank?
What?, a wider gangplank, you think money grows on trees or something!?, blindfolds for everyone, ear muffles* available at a reasonable price.
- In case you find the paniked screams of horror from the blindfolded passangers that stumbled out of the gangway as they tumble down to the ground too enerving.
Bah! I see dedicated facilities for aeroplanes, zeppelin and blimps-- but where am I supposed to land my autogyro?
Also typical of predictions of the future, “they” are underemployed draftsmen and commercial artists with more imagination than sense.
One where you couldn’t hold on to both handrails at the same time?
Look, it is windy up there. You would want some sort of telescoping tunnel to come out of the building up to the craft exit door.
I imagine they would need fifty floors of wall to wall dividing rope mazes for the TSA security line …
I just noticed that the airship hangars are perpendicular to the prevailing wing direction… greasing in one of those puppies would be a hair raising job.
It’s pretty unrealistic - no part of it is labelled ‘atomic’, and flying cars aren’t catered for at all.
HA! there isn’t even a wi-fi hotspot. Completely absurd. Pencil in a Starbucks somewhere and we’ll start talking.
(Do I hear the sweet pitter patter of Photoshop Tennis?)