Towering Cottage, Very Down Under, Hilltop Home World's Most Extreme Homes : Season 1 Episode 5

A typical British clapboard cottage is atypically placed atop a 70-foot tower. At the other end of the housing height spectrum, an Australian family beats the searing heat by burrowing underground. And it’s back in the clouds for a South African couple living in a luxurious hilltop haven.