the south end of the BMT Broadway Line mezzanine, a corridor slopes down to the IRT mezzanine. The IRT mezzanine contains two overpasses, connecting the station complex with exits on the east side of both Fourth Avenue and Union Square East. Galleries extend from the overpasses above the platforms, with stairs leading downward from the galleries to each island platform. A corridor runs above the western side of the IRT station, connecting the two overpasses. This corridor contains restored cross-segments of the original station wall, including faience cornices, mosaic tile borders, and plaques of eagles. These are part of a larger, station-wide art installation entitled Framing Union Square, by Mary Miss. Original faience plaques with the number "14" are in the southern end of the mezzanine, near one of the entrances. Other decorations, such as a pale blue frieze, date from later renovations. The area near the Zeckendorf Towers contains storefronts, as well as steel and glass enclosures. Another staircase extends from the IRT mezzanine to a small mezzanine above the Canarsie Line platform. Another mezzanine on the western side of the station serves the Canarsie Line platform directly. There were several connecting passageways between the western Canarsie Line mezzanine and the larger concourse area above the Broadway Line. However, these passageways have been sealed off. The passageways to the Canarsie Line platform contain cruciform borders similar to those in the other passageways. Exits The station contains numerous entrances and exits. Near the southeast end of the station, there is one stair, escalator bank, and elevator in the Zeckendorf Towers at the northeast corner of 4th Avenue and 14th Street; this is the ADA-accessible entrance to the station. There are two stairs to each of the southwest and southeast corners of the same intersection. All of these lead directly to the Lexington Avenue Line mezzanine. One block to the west, there are two staircases on the south side of 14th Street between Broadway and University Place, which lead to the western Canarsie Line mezzanine. A closed exit extended to the west side of Broadway between 13th and 14th Streets. The central portion of the station contains another exit from the Lexington Avenue Line mezzanine to the Zeckendorf Towers, which leads to the southeast corner of Union Square East and 15th Street. There are also two stairs inside Union Square Park between 14th and 15th Streets. One is closer to Union