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Keeping a Stockholm residence balmy enough for lush greenery and outdoor lounging year-round is generally impossible – unless you sheath the entire house and a slice of the yard in a gigantic greenhouse. That’s exactly what homeowners Charles Sacilotto and Marie Grammar did with their timber-clad home, creating a natural warming effect powerful enough to get the interior to reach 68 degrees Fahrenheit when it’s less than 29 degrees outside.

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The couple purchased the home as-is and built the glass envelope around it. Made of 4-millimeter security glass, it’s strong enough to stand up to the elements, and won’t become dangerous if it shatters. This outer layer also enables the family to hang out on their rooftop terrace in any weather, even when it’s raining, while gazing up at the sky.

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The greenhouse produces a Mediterranean-like climate within its walls and reduces energy bills by as much as 50 percent. It’s not completely self-sufficient, requiring a little bit of heater supplementation during the most frigid months of the year. But it’s an interesting (and pretty cool-looking) way to live a nature-connected indoor-outdoor life, even when you live close to the Arctic Circle.