Note the construction of the cement walls. Steel wire line from the old cable tool drilling rigs was used to re-inforce the cement. Modern methods would be to use "re-bar" to do the same thing. But we know in those days cable was plentiful and lot less expensive.
I thought the cactus growing by the corner of the jail house added a little character to the building. I didn't observe any wooden doors to shut out the weather. It could get extremely hot or cold with out some protection.