Which seat of government has 57,000 people underneath it daily?
Philadelphia City Hall Philadelphia City Hall, built in 1901 and located at 1 Penn Square, is the seat of government for the city of Philadelphia, Pennsylvania.
Adelaide Adelaide ( ) is the capital city of the state of South Australia, and the fifth-most populous city of Australia. In June 2016, Adelaide had an estimated resident population of 1,326,354. South Australia, with a total of 1.7 million inhabitants, has the most centralised population of any state in Australia, with more than 75 percent of its people living in greater Adelaide, while the other population centres in the state are relatively small.