Unlike Georgian Independence Hall, Congress Hall, also known as the Philadelphia County Courthouse, was built in 1787 in the then emerging Federal style. While similar to the preceding style, the overall effect is a greater lightness and elegance when compared to the Georgian style.
One distinct difference can be seen in the windows – they lack the wide surrounding frames (architraves) of Georgian windows, and the muntin strips separating the glass lites are thinner. The lites themselves are larger, and the whole window is larger in relationship to the surrounding solid wall.