The Philadelphia City Hall Philadelphia City Hall, built in 1901 and located at 1 Penn Square, it is the seat of government for the city of Philadelphia, Pennsylvania. This building was designed by Scottish-born architect John McArthur, Jr., in the Second Empire style, and was constructed from 1871 until 1901 at a cost of $24 million. City Hall was topped off in 1894, although the interior wasn’t finished until 1901. Designed to be the world’s tallest building, it was surpassed during construction by the Washington Monument and the Eiffel Tower, though it was at completion the world’s tallest habitable … Continue reading The Philadelphia City Hall in Pennsylvania