The show opens with a visit to the top of Great Blue Hill and its historic weather observatory (built in 1885) to view the sights: the town of Milton, downtown Boston (8 miles northeast), and the 7,000 acres of parkland that comprise the Blue Hills R... (more)eservation. At the jobsite, the crew takes up planks in the front part of the barn in preparation for turning it into a garage; the structure reveals various areas of rot and poor construction. Forms are in place to accept the concrete coming to make up the new workshop's foundation, and landscape architect Tom Wirth assesses some of the site's challenges, including a lack of proper accesss to the front prospect of the house. Historic photos shows a gravel or shell drive that once passed by the home's front, and Tom thinks a similar scheme would be appropriate. Insulation specialist Graeme Kirkland shows us the results of a blower door test he's conducting: the house changes its interior air 11 times an hour in a simulated 15-mile-an-hour w