The Pennsylvania Supreme Court is hearing cases in Philadelphia's historic Old City Hall, where the U.S. Supreme Court held court from 1791 to 1800.
Tuesday's event marks Constitution Week. It is the first session televised as part of a new plan to air the court's arguments.
The cases on the docket involve open records law, prison health and pharmaceuticals. The first case the court was hearing involved a plane crash.
The U.S. Supreme Court shared space with the Mayor's Office at Old City Hall in the 1790s, when Philadelphia was the capital of the United States.
The building sits next to Independence Hall.