This 14-acre Town-owned Sanctuary is located on the eastern side of Route 302 in North Windham, just north of the Windham Assembly of God Church. There are no trails on the property and no parking available on the site. Great High Bush Blueberries. It is not uncommon to see cars parked on the shoulder of Route 302 over several weeks in the summer while people are picking blueberries. Wear long pants! Blueberries are in season in July and August.