Built in the first quarter of the 19th century on Philadelphia’s Main Line, this working barn has been converted to a unique private residence. The essential exterior character of the building was preserved, and the interior spaces were organized around a central atrium infused with natural light from large glass doors installed in the opening for the original barn doors. The interior wood structure had been removed at some time in the past and replaced with concrete columns and floors. These concrete forms were partially retained, providing the basis for a contemporary interior design vocabulary. The new white oak stairway is a reference to the missing original wood structure.