In 1993, the complex was chosen from among four candidates as the site for the new Pennsylvania Convention Center and purchased by the city's Redevelopment Authority of Philadelphia. After renovations completed in 1997, designed by BLT Architects in a joint venture with CLA, the headhouse became the center's main entrance, while the trainshed became its Grand Hall and ballroom, with meeting rooms and a hallway. Originally built to accommodate the offices of the Philadelphia and Reading Railroad, this historic railroad facility (designed by the Wilson brothers, prominent 19th century architects and engineers) is the linchpin of Philadelphia's burgeoning commercial district east of City Hall. Now renovated and remodeled street and concourse levels of the building accommodate a variety of retail and food service operations. The remaining space on the concourse levels of the headhouse became retail space. The former Reading Railroad offices on the headhouse's upper floors were converted to meeting and ballroom facilities. It also contains more than 200 rooms for the adjacent Marriott Hotel, to which it is connected by a skywalk and for which it serves as a secondary entrance.