1: World's Most Extreme Homes German Eco House, Australian Beach House, English Train Station

2: World's Most Extreme Homes Swedish Rock Home, Chameleon House, Canadian Mushroom House

3: World's Most Extreme Homes Canadian Tree Sphere, Recycled House, Martello Towers

4: World's Most Extreme Homes India Mud Hut, Greneda Grotto Glamour, Karuizawa House

5: World's Most Extreme Homes India Director's Home, French Alpine Chalet, Canadian Island Home

6: World's Most Extreme Homes Canadian Underground Home, Casa Los Andes, Miso Barrel One

7: World's Most Extreme Homes British Straw Bale Home, Mexican Mediterranean, Montreal Balloon Factory

8: World's Most Extreme Homes British Glass House, Malaysian Timber Triangle, Kenyan Organic House

9: World's Most Extreme Homes Bali Open-Air Home, Australia Hideaway, Canadian Fantasy Home

10: World's Most Extreme Homes Japanese Y House, Jamaican Dome, Canadian Tire Home

11: World's Most Extreme Homes South Africa Fantasy Home

12: World's Most Extreme Homes Canadian Lake House, Australian Dome, South African Modern

13: World's Most Extreme Homes Revolving South African House, Japanese Gallery House, India Cathedral