In 1978, the New York City Department of City Planning proposed making Queens Plaza into a large subway station complex. Queens Plaza would have been converted to a transfer station with the 63rd Street Line, which at that time was described as a "tunnel to nowhere" that did not connect with any other lines in Queens. The complex would also have had a retail center above it, as well as a transfer to the elevated Queensboro Plaza station. This was ultimately not constructed, and the 63rd Street connector was built instead, between the Queens Plaza and 36th Street stations.