Mindel/Kinard family treehouse
Lloyd Fox / Baltimore Sun

Matthew Mindel, 3, heads down the slide attached to the treehouse in his family's Lutherville backyard. 

Matthew Mindel, 3, heads down the slide attached to the treehouse in his family's Lutherville backyard. 

(Lloyd Fox / Baltimore Sun)
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Mindel/Kinard family treehouse
Lloyd Fox / Baltimore Sun

Harrison Mindel, 5, and his brother, Matthew Mindel, 3, in their treehouse, which features functioning electrical outlets and tube lighting. 

Harrison Mindel, 5, and his brother, Matthew Mindel, 3, in their treehouse, which features functioning electrical outlets and tube lighting. 

(Lloyd Fox / Baltimore Sun)
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Mindel/Kinard family treehouse
Lloyd Fox / Baltimore Sun

Matthew Mindel, 3, plays on the family treehouse, which has a wooden bridge spanning two trees. 

Matthew Mindel, 3, plays on the family treehouse, which has a wooden bridge spanning two trees. 

(Lloyd Fox / Baltimore Sun)
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Plunkert family treehouse
Barbara Haddock Taylor / Baltimore Sun

Twins Emma and Jacob Plunkert, 11, helped their parents build this treehouse in their Cockeysville backyard in 2009. 

Twins Emma and Jacob Plunkert, 11, helped their parents build this treehouse in their Cockeysville backyard in 2009. 

(Barbara Haddock Taylor / Baltimore Sun)
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Plunkert family treehouse
Barbara Haddock Taylor / Baltimore Sun

Emma and Jacob Plunkert, 11, hang out in their family treehouse, which their family built for just $300 using salvaged materials. 

Emma and Jacob Plunkert, 11, hang out in their family treehouse, which their family built for just $300 using salvaged materials. 

(Barbara Haddock Taylor / Baltimore Sun)
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