Coober Pedy
Coober Pedy
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Coober Pedy - Wikipedia
The harsh summer desert temperatures mean that many residents prefer to live in caves bored into the hillsides (known as "dugouts"). A standard three-bedroom cave home with lounge, kitchen, and bathroom can be excavated out of the rock in the hillside for a similar price to building a house on the surface.
Why does the first building look like a spaceship
Its a movie prop from Pitch black. Source: https://www.kidsnews.com.au/just-for-fun/spaceships-at-sa-property-promise-out-of-this-world-backyard-fun/news-story/8723375c2632c19a694239dedb88936e