a tunnel underneath Interstate 64, continuing to the Richmond Heights station serving the popular Saint Louis Galleria shopping mall. The line then proceeds through a sharp turn east to the Clayton station in the median of Forest Park Parkway in Clayton, Missouri, where it serves the Central Business District of St. Louis County. It heads further east to the Forsyth station where it then enters a tunnel traveling to the University City-Big Bend subway station. After crossing the St. Louis City/County boundary, the Blue Line makes its last stop at the Skinker subway station serving nearby Washington University. At the following station, Forest Park-DeBaliviere, the Blue Line meets the Red Line. From this station the two services share a track alignment with each other until the Blue Line terminates at the Fairview Heights station in Illinois. For the rest of the Blue Line, see the "Shared Alignment" section. Shared alignment From the Forest Park-DeBaliviere station, the Red and Blue lines share the same set of tracks for the next 16 stations. Continuing east, the Central West End station serves the Washington University Medical Center including Barnes-Jewish and St. Louis Children's hospitals. The next station, Cortex, is the system's newest which was built to serve the Cortex Innovation Community. From here is the Grand station, located under the Grand Boulevard viaduct, which serves Saint Louis University and its namesake hospital. The Grand station also transfers with Metro's busiest bus line, the #70 (Grand). Trains then pass under the Jefferson Avenue viaduct before they enter the next stop at Union Station, located partially beneath the historic train shed at the popular St. Louis Union Station. A short distance later, trains stop at the Civic Center station and connect with the Gateway Transportation Center and Enterprise Center, home of the St. Louis Blues hockey team. Trains then continue east along Interstate 64 turning north toward the Stadium station. Stadium station serves Busch Stadium, home of the St. Louis Cardinals and the popular Ballpark Village district. Here, the line enters the historic St. Louis Freight Tunnel that was built in 1875, it was converted to light rail usage beginning in 1991. The next station is 8th & Pine, a subway station located under 8th Street serving the Central Business District. Following a curve eastward under Washington Avenue, the line then enters the Convention Center subway station serving the Dome and convention facilities at America's