The New York City Subway has more stations than any other subway in the world. Officially, the MTA counts 472 stations as of January 2017, but when counting "station complexes" as a single station, that number decreases to 424 (though still the most stations in a single system by far). Of these stations, 275 are fully underground, 153 are elevated, 29 are on an embankment, and 15 are in an open-cut. From the subway's opening in 1904, mosaics and other artwork has been incorporated in to station designs. Since 1985, the MTA Arts & Design program has installed artwork at more than 260 stations. The New York City Subway also features a number of abandoned stations and platforms that are no longer in use, many of which can be seen from passing trains or other publicly accessible areas.