The treehouse, Hidden Hollow’s most anticipated new feature, will open its leafy heights to visitors on August 18th!
Planning for the treehouse began in July of 2008, when staff met with Pete Nelson, master treehouse-builder and co-founder of The TreeHouse Workshop, Inc., based in Seattle, WA. He is widely recognized as the nation’s foremost authority on treehouses. It was designed based on one of his renderings. Mr. Nelson’s philosophy is that “each tree or group of trees has within its natural shape a perfect treehouse design that will fit safely and efficiently.” Each treehouse should, therefore, be unique.
He worked with Heritage Arborist Gary Childs to choose two oak trees that would thrive with a treehouse among their branches. The design he presented for HH’s treehouse was inspired by Norwegian stave churches, medieval wooden churches with post and beam construction related to timber framing.
Architect Greg Jones (who also designed the new wing of the Auto Museum) modified Pete Nelson’s design, creating the final design and working blue prints. Jones worked with the instructor at Upper Cape Tech to create a design that was buildable for the students.
Students from the Carpentry program at Upper Cape Cod Regional Technical School, a regional school district in Bourne that serves the towns of Bourne, Falmouth, Marion, Sandwich and Wareham. Teachers in this program instruct students in mill and house carpentry planning and construction projects. Carpentry students develop their expertise at off-campus community building projects such as this one. The goal is to broaden students’ occupational capabilities by providing practical and relevant cooperative work experiences that connect their academic and technical experience to the real world.
The carpentry students also built the stage in Hidden Hollow and the pump house for the Flume Fountain.
Under the supervision of instructor Kevin McFayden, nearly two dozen students volunteered many hours of hard work on the treehouse during the 2009/10 and 2010/11 school years. Kevin describes this as a spectacular opportunity for his students, “the kind of project that would only come along once in two lifetimes.” We think they’re the kind of people who only come along once in two lifetimes!
During the first school year, the students completed the footings and the first floor decking. Kevin describes creating the footings as the greatest challenge of the two year project. It was critically important that they be structurally sound to provide a solid base for the treehouse. Digging the deep footings and setting the brackets while working on a steeply sloped hillside with concern for not damaging the surrounding vegetation was challenging. The upper floors and roof were constructed during the second school year.
Weather was a constant challenge. Kevin quickly realized that some of the fabrication would need to be done at the school. He came up with the ingenious solution of drawing a full scale treehouse on the floor of their carpentry shop at the school. The students did the measuring and precut the wood in the shop, then assembled the pieces at HMG. Kevin reports that this method worked beautifully – “like a well-designed jigsaw puzzle” – and that there was never one piece that did not fit perfectly on site, a great lesson in prefabrication for the students.
The treehouse decking is made of ipê (EE-pay) wood, from a tropical tree also called poui or trumpet tree. Ipê is very durable and resistant to insect damage. The boardwalk through Hidden Hollow is made of ipê. The treehouse’s framing is red cedar, the support posts locust and the handrails mahogany. Unique to a treehouse, the first floor is completely accessible to visitors with disabilities.
Treehouses bring out the kid in all of us. They represent freedom and inspire dreams. This treehouse provides an incredible vantage point for surveying the unique landscape of Hidden Hollow from a bird’s eye view. We envision it being used in many ways: as an observation tower, a family play space, a retreat, or just a place where kids can let their imaginations run wild!
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