Episode: Shipwreck, Leaf, Butterfly - 06:55 5 January
This amazing assortment of homes from all over the world includes a house built to mimic a leaf in Utah and a Russian residence that looks like a shipwreck.
Episode: Sandbag House, Modern Igloo, Boomerang, Gothic Tower - 06:55 6 January
This amazing assortment of homes from all over the world includes a hi-tech party house in California, and an English residence inside a six-storey Gothic tower.
Episode: Treehugger, Noah's Ark, Spider - 06:55 7 January
This amazing assortment of homes from all over the world includes a house in New Mexico that looks like a piece of pottery and a Japanese home that looks like origami.
The word "extreme" means different things to different people, and to these homeowners it means pushing the envelope as far as possible. From construction to completion, take an up-close look at some of the world's most spectacular houses ever built — including a modern Italian castle, a seaside house made of refrigerator panels, a floating home that was a ferry boat and a spherical house that revolves with the sun — and find out what makes them all so unique.