A modern four-bedroom property in Australia has gone up for sale with a price guide of $4.5-$5 million, £2.5-£2.8 million – but it’s what’s hiding to the rear of the property that’s stunning buyersA modern four-bedroom property in Australia has gone up for sale with a price guide of $4.5-$5 million, £2.5-£2.8 million – but it’s what’s hiding to the rear of the property that’s stunning buyers