sentences:  510,000), was originally proposed in 1999 as a $75 million “public-private” partnership.The project included a publicly owned convention center ($30 million) and a privately-owned hotel ($45 million).By the time the convention center and hotel opened in 2009, the project’s cost had ballooned to more than $170 million, with more than 90% of the total cost of both the convention center and hotel borne by Pennsylvania taxpayers.