World's Most Extreme Homes

Ruth visits a funky forest creature-inspired lake house in Sweden, a ball-shaped home for a soccer fanatic in Brazil and a modernist tree house in New Zealand.

Ruth explores a Dutch home in an iconic windmill, a colorful whale house in Mexico with organic lines and a self-sufficient home deep in the Australian outback.

Ruth tours a 1940s Dutch river barge that's been transformed into an elegant house, an airy minimalist home in Brazil and an enchanting straw bale house with reclaimed features designed by a New Zealand artist.

Ruth meets the owners of an English cottage in the clouds, an Australian home built inside a dugout and a South African indoor-outdoor home with panoramic views.

Ruth visits a stunning 500-year-old English country house, a coastal Brazilian treehouse in the rain forest and recycled materials home constructed by a special effects artist in New Zealand.

Ruth tours an eco-friendly flying saucer home in the French countryside, an indoor-outdoor home in rural Australia and a former royal banquet hall transformed into a majestic in pastoral England.