MonstroCity, St. Louis – Built out of found objects, this “post-Apocalyptic” structure is part of the eclectic City Museum in St. Louis, Missouri. (City Museum)

Clemyjontri Park, Fairfax County, VA – This huge playground was conceived to allow children of all physical abilities play side by side. Its thoughtful design makes it accessible to those in wheelchairs, who use braces, or have developmental disabilities. (Fairfax Gov)

Science Playground, Queens – The playground at the New York Hall of Science is the biggest of its kind in the country. Explore sound, light, and mechanics or just swing and climb on the park’s innovative equipment. (New York City Hall of Science)