"Home" can mean a wide array of things. Far more than four walls and a roof, home is a sanctuary and a shelter. No two are the same.
And some are more unique than others.
From domes to caves, treehouses to igloos, people across the globe live in unconventional dwellings.
Here are some of the strangest.
This house in Abuja, Nigeria, is partially built in the shape of an airplane. The house was built by Said Jammal for his wife, Liza, to commemorate her love for travel.
The Heliodome, a bio-climatic solar house near Strasbourg, Eastern France, is designed as a giant three-dimensional sundial, set on a fixed angle in relationship to the sun's movements. It is built to provide shade during the summer months, keeping the inside temperature cool. During Fall, Winter and Spring, sunlight enters the large windows as the sun's position is lower in the sky, thus warming the living space.
Liu Lingchao, 38, carries his makeshift dwelling as he walks along a road in Liuzhou, China in 2013. Five years ago, Liu decided to walk back to his hometown Rongan county in Guangxi from Shenzhen, some 462 miles away, where he once worked as a migrant worker. With bamboo, plastic bags and bed sheets, Liu made himself a five feet wide, six and a half feet high "portable room," weighing about 132 lb, to carry with him as he walked more than 12 miles a day.
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