Eighteen-foot-long ribs run from top to bottom to form the treehouse's struts. The floor package runs into the ribs and creates a triangle, which negated the need for more structural support. During construction, Allen broke one of the long ribs but rather than throwing the material away, he repurposed it for the entryway. Photo 19 of 20 in The Most Popular Homes in Dwell: 61-80 by Diana Budds

The Most Popular Homes in Dwell: 61-80

19 of 20

Eighteen-foot-long ribs run from top to bottom to form the treehouse's struts. The floor package runs into the ribs and creates a triangle, which negated the need for more structural support. During construction, Allen broke one of the long ribs but rather than throwing the material away, he repurposed it for the entryway.