"Nestled into one of the prettiest corners of the Cape's scenic Route 6A is the inviting St. Mary's Church in Barnstable Village. This Cape Cod-style, cedar-shingled complex of buildings dates from the 1800s, and is both beautiful and highly energy efficient. For economic and environmental reasons, the parish has taken several smart steps in their stewardship of the property—and the Earth." Columnist Judy Holt takes a tour.