I stumbled on this place a few years ago on a visit to the Barossa Valley in South Oz.
I wasn't able to visit then but had a chance a couple of weeks ago.
It consists of a small collection of military aircraft, all gathered together by one chap. There is also a HUGE collection of models, again military, and claims to be the largest display of 1/72 models in the southern hemisphere (over 1400). There are also larger scales on display as well.
Here are some pictures
Link