In celebration of the New York City subway's 110th birthday this week, the Metropolitan Transportation Authority rolled out some vintage "nostalgia" trains along the 2/3 track between 96th Street and Times Square-42nd Street on Sunday.
There were two trains: the four-car Low Voltage train, which ran until the late 1960s, and the “Train of Many Colors," which operated from the late 1960s until 2001.
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Google also celebrated the anniversary, offering a virtual tour inside the New York Transit Museum, where you can see what the subways looked like throughout the century. Some images from the tour: