This house in Australia, designed by Paul Morgan Architects, has a giant white alien blob as the centerpiece in its living room. But the alien blob doesn't just look cool, it is actually a multi-functional, integral part of the building's entire structure. What does it do?

First and foremost, it is a water tank that collects and stores rain water. It also cools the air in the living room, holds the roof intact, and is linked to an outside tank that keeps extra water needed for flushing toilets and watering the garden. Structurally, it holds the roof intact and separates the giant space into kitchen, living, eating, and work zones. Images by Peter Bennetts

Paul Morgan Architects via Materialicious