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18 of the world's most stunning treehouses

By: Laura Moss on March 18, 2011, 1:25 p.m.
The Blum House was inspired by how we think about space.

Photo: O2 Treehouse/Facebook

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Blum House

O2 Treehouse architect Dustin Feider began building the Blum House in 2009. His inspiration for the house came from Antonio Scarpa, a designer whose work looks at how we experience space.