Just about any kid would be thrilled to be gifted with an outdoor getaway that includes hammocks, a zip-line, a curving slide, a rock climbing wall, a library stocked with more than 300 graphic novels ...

After gliding through the treetops on a cable at a park in the Adirondacks, Holly Swanson wondered if she could replicate the fun in her parents' backyard. Turns out it was easy, she said. After a ...