Designed and built by Diedricksen himself, the Periscope was intended to be a treehouse, but its tall, elongated form made it impossible to hoist into its canopy. Today, it remains fixed to the ground in Canton, Massachusetts.

Copyright Derek Diedricksen.  Cabins & Hideouts from These Incredibly Tiny Cabins, Tree Houses, and Mobile Dwellings Are All Less Than 182 Square Feet