a City Council resolution was put forth to turn over much of this property to Penn and CHOP. The initial plans were not fully developed, but did not call for the demolition of Convention Hall, the location of several historic events. By 2005, plans had been expanded and the whole site, including Convention Hall, was slated for demolition to make way for a new clinical care facility attached to the hospital. Many local preservationists were opposed to this. Some were mollified by an exhaustive study commissioned by Penn to find alternate uses for the buildings and demolition continued. The last remaining building in the complex, Pennsylvania Hall, was demolished on March 3, 2007. Penn's Perelman Center for Advanced Medicine was officially opened on October 2, 2008. Postal lands In 2007, Penn bought between its campus and the Schuylkill river, an area formerly occupied by the United States Postal Service known as the Postal Lands. (A 1994 map shows the area before the GE building was refurbished into the Left Bank and the Cira Centre was built.) Penn repurposed the Postal Lands into a new high-rise office and residential complex, Cira Centre South, and a public park with University athletic facilities, Penn Park. In addition, the former post office building has been turned into office space for the IRS. Penn Park opened in September 2011 as a new urban park that stretches from Walnut Street to South Street featuring a fabric of tightly interwoven recreational and athletic components. The project also includes underground cisterns that collect and repurpose rainwater. Cira Centre South was developed by Brandywine Realty Trust and completed in 2016. Two new towers replaced a one-time truck annex for the Post Office and now include the headquarters for the FMC Corp., a parking garage with a green roof open to the public, an apartment building, and street-level retail. The 49-story FMC Tower in this complex is the tallest building in University City. University City District University City District (UCD) is the name of a private, non-profit organization created by the University of Pennsylvania and other local institutions in 1997 in an effort to provide University City with additional safety, cleanup, and marketing services as well as help in coordinating district initiatives. UCD demographics report In 2007, the University City District released a new edition of its University City Report Card, based on 2006 demographic statistics. The report said the