The features inspired by Chartres include the detailing of the three Riverside Drive entrances and the lack of decorative elements on the facade, except for the stained glass windows on the walls and the sculptural elements around each portal. The massive single bell tower was inspired by the two western towers at Chartres. The rest of the facade consists of Indiana Limestone. Upon Riverside Church's completion, its design received both praise and criticism. In mid-1931, The American Architect published pieces in mid-1931 that featured a critical viewpoint from Columbia architecture professor Walter A. Taylor and a rebuttal from architect Charles Crane, who had worked on the project with Pelton. While Taylor believed the design should have been more modernist, Crane defended Pelton's Gothic design as being "fundamentally Christian". The writers of the 1939 WPA Guide to New York City said the tower's features make the "building itself seem smaller than it is, so that its scale is scarcely impressive, even when seen at close range". Other critics called the building's exterior overly opulent; according to one critic, when considered along the progressive ideology, the Gothic design "can only be interpreted as an outward confession that religion is dead". The New York Sun referred to the building as one of the "most outstanding additions" to New York City's church architecture "in recent years". Eric Nash, in his book Manhattan Skyscrapers, called Riverside Church "Manhattan's last great eclectic skyscraper" while the AIA Guide to New York City dubbed the church "easily the most prominent architectural work along the Hudson [River] from midtown to the George Washington Bridge". Main building Riverside Church's main structure is centered around the nave, which is aligned on a north–south axis and is closer to Riverside Drive on the western portion of the block. The chapel and narthex are to the south, closer to 120th Street, while the chancel, which contains the altar, and the ambulatory are to the north, closer to 122nd Street. Facade The western facade of the church's nave is adjacent to Riverside Drive. At the time of Riverside Church's construction, the church did not own the lots along 120th Street to the south so the building's three entrances are on its western side facing Riverside Drive rather than on the southern side at the back of the nave, as is customary in most churches. The entrances are atop small flights of steps leading from