Philadelphia City Hall There can surely be no grander or more ostentatious City Hall than Philadelphia’s, designed by John Macarthur Jr. in 1871 and, once the tower had been completed in 1894, the world’s tallest building:- It is festooned with fine beaux arts carving:- Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Email a link to a friend (Opens in new window) Email Share on LinkedIn (Opens in new window) LinkedIn Share on WhatsApp (Opens in new window) WhatsApp Like Loading... Standard