1: World's Most Extreme Homes Scotland Water Tower, Ireland Church, South Africa Beach House

2: World's Most Extreme Homes London Church, Cape Town Tree House, French Curved Wood House

3: World's Most Extreme Homes Dutch Windmill, Australian Creation, British Mansion

4: World's Most Extreme Homes Belgium Barge, Boinga Bob's Tree House, Victorian Tank

5: World's Most Extreme Homes Finland Suspended House, Chile Mountain Retreat, England Tugboat

6: World's Most Extreme Homes Victorian Water Tower, Sydney Spaceship, New Zealand Island Retreat

7: World's Most Extreme Homes Modern English Castle, Wide-Open in Australia, South Africa Minimalist

8: World's Most Extreme Homes Scottish Castle, Austrian Glass House, British Sci-Fi House

9: World's Most Extreme Homes French Retro, Brazilian Rainforest, British Cob Home

10: World's Most Extreme Homes English Crescent House, Mexican Shark House, New Zealand Mud Castle

11: World's Most Extreme Homes Swiss Water Palace, London Compact Home, Minimalist South Africa Home

12: World's Most Extreme Homes Castello Brolio

13: World's Most Extreme Homes English Woodsman's House, Austrian Chalet, Spanish Cave