General Motors Building in Detroit, while the tower stories influenced the "Tower of Jewels", designed by Carrère and Hastings for the Panama–Pacific International Exposition. Form The building is shaped like a ten-sided "C", although the lot that it occupies is an irregular hexagon. The main facade, along Centre Street to the west, is long while the eastern facade is long. The building has a width of , measured from west to east. The northeastern and southeastern sides accommodated the diagonal paths of Duane Street and Park Row, respectively. The floors' north–south axes are longer than their west–east axes; the wings of the "C" face west. This floor plan ensured that all of the building's windows would be able to receive direct sunlight and eliminated the need for an interior courtyard, which could not be lit by sunlight. The Manhattan Municipal Building is 34 stories tall; the main structure consists of 26 stories, and a tower rises eight stories above the center of the structure. The main cornice is above ground level while the tower rises to around above ground level. Including the Civic Fame statue, the building stands at either or . Atop the northern and southern wings of the "C" are pavilion roofs, which are connected to the central tower with roof decks and a stone cornice. The central tower is composed of a two-story square section; atop this is a circular section flanked by four circular turrets above each corner of the square. The circular section of the central tower is composed of two layers: an enclosed space surrounded by columns, atop which is a smaller peristyle. The Municipal Building was the first in New York City to incorporate a subway station, the Chambers Street station, below its base. The approved building plans in 1909 also called for three basement levels within the volume not occupied by the subway station. Facade The building consists of 25 bays on its western and eastern facades (counting the eastern facade as being composed of the northeastern, southeastern and eastern elevations) and three bays on its northern and southern facades. Each bay contains either one or two windows on each story. The facade is made of ashlar granite, except for the details above the 23rd floor, which are made of terracotta. A three-story-tall colonnade of Corinthian columns runs across the base along Centre Street, with the rest of the building set back