* Treehouse People, Action, Events In the summer of 2003 and 2004, the perfect treehouse took shape in a four-stem maple in the back yard of a house in Acton, MA. The treehouse was built by Erik J. Heels and his three children: Sam, Ben, and Sonja. Shown here in all four seasons: winter, spring, summer, fall. Clocktower is a founding sponsor of Treehouse. For more info, see http://www.treehouse.red.