There are few things we love more than witnessing the transformation of something old into something new — and sustainable. Washington, D.C.-based firm KUBE architecture has just unveiled the beautiful renovation of a 1950s home, called the Dual Modern Home, that includes a new addition with expanses of floor-to-ceiling glass and a lush green roof. Although the architects breathed new life into the home, they had a great structure to work with from the get-go.