The Old Town Transit Center is an intermodal transportation station located in the Old Town neighborhood of San Diego, California. It is served by the San Diego Trolley, Coaster commuter rail, and Amtrak's Pacific Surfliner, as well as numerous San Diego Metropolitan Transit System bus lines.HistoryThe Old Town Transit Center was built in the early 1990s, and San Diego Trolley's North/South Line was extended here on June 16, 1996. In November 1997, the line, renamed the Blue Line, was extended into Mission Valley. When the Green Line service was introduced with the opening of the Mission Valley East extension on July 10, 2005, the Blue Line's northern terminus was pushed back to this station, which also served as the Green Line's western terminus. During a system redesign on September 2, 2012, as part of the Trolley Renewal Project, MTS extended the western terminus of the Green Line from this station to 12th & Imperial Bayside Terminal and shortened the Blue Line's northern terminus to America Plaza. The Special Event Line was eliminated; instead, the Green Line will add cars and offer more frequent service to PETCO Park, San Diego Convention Center, Qualcomm Stadium and Viejas Arena at San Diego State University when necessary.