“Inside the Tree House” above, is another highlight of the Missouri Botanical Garden’s TREEmendous Extreme Treehouses exhibit running through August 21 as part of the garden’s yearlong celebration of the U.N. International Year of Forests. The treehouse was designed by a team including Ann Floresk Architect, Villinger Construction Company, Teiber Construction Company, and Thies Farm and Greenhouses. The hexagon-shaped house is made from re-purposed wood and incorporates several sustainable design features — solar power, a recycled rain water system and green roof technology. Plus, root tunnels, leaf shutters and models of forest inhabitants educate kid visitors.

Other treehouses include: the AMAZEing Rings, designed by Washington University students, which is a maze-like wood and fabric structure made to look like a tree’s ring structure; Treehenge designed by Burns & McDonnell a Kansas City engineering and architecture firm, a Stonehenge-like structure built from bamboo and reused utility poles; and A “Living” Room in a Garden, designed by St. Louis architecture and design firm Christner Inc, made from salvaged Christmas trees with a play area featuring oversized logs that children can use to build and create.

Photos courtesy of Missouri Botanical Garden