Grey Towers is the ancestral home of Gifford Pinchot. Pinchot is credited with being the founder of conservation in the United States; was the first Chief of the U.S. Forest Service; and was twice Governor of Pennsylvania. Grey Towers is a Gilded Age mansion built in Milford, PA by the Pinchot family in 1874. It, and the grounds surrounding it, were donated to the people of the United States in 1963; the U.S. Forest Service maintains the site for conservation work and as a museum meant to reinforce the conservation message as well as the prominent role Gifford Pinchot played in U.S. and Pennsylvania history.
The Grey Towers Heritage Association is a 501(c) whose purpose is to support the Forest Service's mission at Grey Towers. It does this in many ways; chief among them is hosting a number of public programs in the mansion and on its grounds. The annual 8K is one of those.