Three of the bidders — the groups backed by Penn National, Procacci and Manookian — have offered plans to build casinos in South Philadelphia, in or near the city's sports stadium complex. Wynn wants to build on the Delaware River waterfront just north of Center City, near where the city's first casino, SugarHouse, already is operating. Goldenberg is targeting a casino for a parking lot near the city's historic district, while Blatstein's plan is to build at the iconic white tower that formerly housed The Philadelphia Inquirer and Philadelphia Daily News.