My husband & I bought an old home (approx. 100 years old) in a suburb of Boston last year. There is a chimney coming out of the roof but we have no fireplace. We think the chimney runs through the home in the center due to some odd wall placement and because we had a difficult time getting nails in the walls of this area to hang pictures. Could it be that they covered up the fireplace with walls? Is it worth it to have the walls opened up and an active fireplace created? I know every project is different but do you have a range of how much this project could cost us? I would love to have a fireplace to cozy up to on those cold New England nights.