Gina Rinehart's House

Rinehart is the majority shareholder of mining company Hancock Prospecting. As of 2014, Forbes ranks her as the richest person in Australia and the world's eighth richest woman, worth an estimated $13.8 billion.

She purchased this 4,500 sqft riverfront home in 2014 for A$14 million (~$11.5 million), reportedly making it the most expensive home ever sold in Brisbane.