'Preservationists have stepped in and salvaged several sites such as Philadelphia’s Lansdowne Theater, which made a cameo appearance in the film “Silver Linings Playbook,” and the Carrie blast furnaces, once part of the Homestead Steel Works complex built by Andrew Carnegie in 1884.“We need places like the Carrie Furnaces,” Christopher said, “not just to remind us of who we were, but also who we are and could be.”'
