There is a "tiny house" movement going on in Colorado and across the country. Talk about living simply, some people are experimenting with super-scaled-down living. A Boulder couple, Christopher Smith and Merete Mueller are doing just that, living in a house not much larger than a large dog house. The pair live in a 133-square -foot house that is just 7-by-19-foot, near Hartsel, Colorado.

So why you ask?

"People ask us why we didn't buy a single-wide trailer, but we wanted something that really felt like a home," Mueller said on a recent afternoon at the house. "It made us really pay attention to good design, the use of space and how it sets the mood of a place."

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