We recently stayed two nights at the Governer's Hill Big 4 Caravan Park at Goulburn to attend the swap meet.
The park owner has a large scale outdoor model railway adjacent to the office and residence and part of the set up is a 'caravan park'. I couldn't resist a couple of photos.
I've no idea where the large scale models came from, maybe accessories from the makers of the trains, the owner was away.
In reality of course such a park could suffer a bit of a noise problem from passing rail traffic!
George