Sun Link, also known as the Tucson Streetcar, is a single-line streetcar system in Tucson, Arizona, United States, that began service in July 2014. The system's 3.9-mile (6.3 km) route connects the Arizona Health Sciences Center (including University Medical Center), the University of Arizona campus, the Main Gate and 4th Avenue shopping and entertainment districts, downtown Tucson, the Tucson Convention Center, and the Mercado District under development west of Interstate 10. Sun Link Light Rail Vehicle 107, a United 200 LRV built in 2014, operates westbound down Congress Street as it passes the Rialto Theatre, an Art Nouveau theater opened in 1920 in downtown. (Tucson, Arizona – February 6, 2017)
