The only significant open spaces within it are the one-block Washington Park near its southern end and Seminary Park, the main quad at Russell Sage. Most of the major streets and the central area of the district are lined with multi-story dwellings that are primarily commercial but with a mix of office and residential space on their upper floors. On the side streets, there are smaller-scale residential townhouses. Institutional use is limited to Russell Sage, a few churches, RPI's buildings and governmental structures like the county courthouse and post office. No industrial use, past or present, is within the district, with the notable exception of the Gurley Building, and even that has been scaled back in recent years. 2016 expansion In 2014 the State Historic Preservation Board considered a boundary adjustment that removes a small area at the northeast corner but adds far more, primarily at the southeast. It would include a total of 200 new contributing properties and extend the district's period of significance to 1978, to take into account the city's urban renewal era. Most of the new areas had been found to be consistent with those already included in the district or accidentally excluded when the district was originally designated. Two years later the National Park Service officially approved the expansion. The most significant change to the district is the extension on the southeast, to the boundary of the city's Eighth Ward in 1870. Between Adams and Ferry streets, three blocks would be added, with the new boundary following the west side of St. Mary's Avenue, excluding a newer house at the northwest corner of the Washington Avenue intersection, and then rear property lines to Kennedy Lane and Hill Street just south of Adams. Two-story rowhouses predominate in this area, many built as worker housing during the 19th century, some as early as the Federal period. Some have intact storefronts. It also has the only significant industrial building in the proposed expanded district, the former Lusco Paper Works on the northwest corner of Fifth and Liberty streets. The area has begun to see some restoration efforts, such as some Greek Revival rowhouses on Liberty Street near Fourth, which will benefit from state tax credits should the area be added to the district. On the west side the boundary would be extended a block, from First to River Street at the Congress Street Bridge approaches, between Division and