Photo by John Gollings, courtesy of McBride Charles Ryan
The next time you see an alien spacecraft seemingly perched on a hill or out in the middle of the field, look again. It may be a home.
Spaceship-shaped homes first gained popularity during the 1960s, but they've experienced a revival in the last decade. A few years ago, Russian billionaire Vladislav Doronin built an extravagant, otherworldly home for model Naomi Campbell that featured a sleek, white, multilevel exterior, luxurious amenities (like a massage area and spa) and views of the nearby birch forest.
In 2005, Australian architecture firm McBride Charles Ryan built a garden home with environmentally friendly components (like a rainwater collection system and double-glazed windows) that could pass for a submerged, copper tribute to Star Trek's Enterprise.
For homes that look like they could exist in space, many saucer-like properties are designed to encourage owners to embrace the outdoors on Earth.
French designer Patrick Marsilli's Dome Spaces, which were originally conceived in the late '80s, are still being built with a mechanical rotation system that turns the entire home toward the best sunlight throughout the day and is made from materials certified by the Forest Stewardship Council.
Finnish architect Matti Suuronen's "Futuro" homes were originally conceived as modern, portable ski lodges that could heat up quickly to relieve people from the cold after hitting the slopes.
Check out these seven spaceship-like homes before they fly away.