The Lookout Loft tree house at Longwood Gardens in Kennett Square is among three public gardens in the Philadelphia area launching exhibits featuring tree houses and "canopy walks." (Clem Murray/Philadelphia Inquirer/MCT)
The Lookout Loft tree house at Longwood Gardens in Kennett Square is among three public gardens in the Philadelphia area launching exhibits featuring tree houses and "canopy walks." (Clem Murray/Philadelphia Inquirer/MCT)