Family fun for children ages 2-10

Designed for children between the ages of 2-10, Hidden Hollow™ is nestled in a two-acre dry kettle hole—a glacially formed depression common to Cape Cod. A variety of play areas and monthly themes provides a stimulating and beautiful outdoor setting for discovery, learning and play. Children can climb stepping stumps, navigate log balance beams, construct forts, create nature-inspired art, build with blocks, dig in sand, experiment with water, make music, engage in sensory investigation with plants, and more.

Hidden Hollow is of the first certified Nature Explore Classrooms in New England and is dedicated to reconnecting children to nature, stimulating curiosity and creativity, and encourages learning through the freedom to explore and interact with nature. Children are exposed to STEM ideas as they experiment with a multitude of science, technology, engineering, and math concepts. Play and experimentation that happens here helps children understand physical laws of nature, as well as promoting teamwork and dramatic play.

Monthly Themes and Activities

Every Month is Something New

Children (and adults!) can learn while they play with monthly themed activities such as pollinators, nocturnal creatures, natural environment, water flow and more.

June Theme: Growing Gardeners

In June, the grounds and gardens are transformed into a rainbow of flowering plants. The Heritage landscape comes alive with our signature rhododendron collection splashing bright pinks and purples overhead, the fringe tree blooms in a shower of white lace, and the azaleas are ablaze. Come learn all about flowering fun in Hidden Hollow™. Design your own play garden, learn about our gardening team, and dig into all things horticultural in this month’s theme: Growing Gardeners!

Hidden Hollow Tree House

Sustainable & Accessible

Master treehouse-builder Pete Nelson advised on the project early on, situating it in two magnificent oak trees and suggesting post-and-beam construction. Architect Greg Jones created the final design that incorporates sustainable woods and high school students from Upper Cape Cod Regional Technical School built the Treehouse. The first floor of the building is fully accessible to visitors with disabilities.


The adventure begins as families encounter discovery boxes that feature clues to the monthly themes. Visitors may also enjoy a socially distanced storybook walk as they meander down the path.


Survey Hidden Hollow from the Lookout.


This grassy space is specifically designated for active engagement and provides opportunities for running, rolling, or other larger-motor activities. Monthly activity elements often encourage big body play here.


The most popular feature in Hidden Hollow™ is the Splash area, which allows kids to safely experiment with water and its properties.


This popular area offers opportunities for hands-on creative expression using a changing variety of materials.


This acorn-shaped area with flooring made from locust stump sections encourages children to build with wooden blocks with lots of room and no worries about noise.


Families experiment with making music and creating expressive movement here using a stage built by the Upper Cape Cod Regional Technical School.


The Treehouse allows visitors to observe Hidden Hollow™ from above and engage with the natural world. Enjoy using monthly materials to learn about observation, STEM tools, and measurements in this space.

Learn About Our Bee Hotels

Learning about bees and the plants that they need are ways to celebrate the exquisite tapestry of life in which we get to participate.

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About Nature Explore Classrooms

In September of 2010, Hidden Hollow became one of the first certified Nature Explore Classrooms in New England.

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Hidden Hollow From Home

Are you looking for some ideas for outdoor fun? Here are some of our favorites.

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