Beside a few shots of the main throne room where Varis is and the Infirmary "Zenos" and Asahi were in,that's the only few bits we saw from Garlemald.
I always imagined it to be similar to Midgar from Final Fantasy 7 only a bit more advanced with the Royal Palace and its magitek research facilities towering over the rest of the city.
I dunno how it's gonna shape up in 5.0 but personally I'd love for Garlemald's captial city to be the largest one in the game so far in comparison to the other major citystates in the game.