The principal survivor of Civil War Philadelphia is this clubhouse for an organization devoted to saving the Union and for a long time the center of Republican high culture. Designed by Scots-born Fraser, it has the air of an overscaled Victorian house, but the massive mansard roof and large-scale brownstone detail on a field of Philadelphia red brick enable it to hold its own among the skyscrapers that surround it. The projecting portico with its monumental stair and bronze railings are hallmarks of the old elegance of Broad Street, while the interiors were furnished by decorative artist George Herzog. In 1909, Horace Trumbauer designed a huge limestone-clad steel-framed rear wing in the Renaissance manner facing 15th Street.