Nevada's city of the plains (3,5)

I believe the answer is:

las vegas

I'm a little stuck... Click here to teach me more about this clue!

'nevada's city' is the definition.
'las vegas' can be an answer for 'city' (Las Vegas is an example). I am not certain of the 'nevada's' bit.

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for las vegas that I've seen before include "Nevada's largest city" , "city surrounded by desert" , "place in America" , "Famous gambling city in Nevada" , "American premier gambling city" .)

I've seen this clue in the Evening Standard.

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