The Federal Reserve Bank has several places in the United States, one on Wall Street and one here. There's a big Mint in Philadelphia, where half of the American coins are made. There's a museum underneath, about the history of American currency. You can get a small bag of old dollar bills broken into pieces, and you can exchange them for commemorative coins.
This is the C branch of the twelve Branches of the superpower's financial giant. As a policy bank, although it is not as big as the total asset reserves of New York, Chicago and San Francisco, Philadelphia's relationship in the history of American independence, coupled with the mutual influence of politics and economy, still has great influence.