A US grandfather planned a $100,000-$150,000 treehouse for his grandkids; it grew into a $325,000 backyard castle with a pirate ship and 200-foot zipline
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September 15, 2026
The whimsical design includes a turret, and a pirate ship (Source: Tree Top Builders) What started as a simple plan to build a cozy backyard play area for his grandchildren grew into an impressive architectural project after an American grandfather…