The Transbay Transit Center is a major transportation hub located in downtown San Francisco, California. It serves as a central point for various transit services, including buses, trains, and shuttles, connecting the Bay Area and beyond. The facility features a rooftop park and offers amenities for travelers, making it a key part of the city's public transportation infrastructure. Opened in 2018, the center is designed to accommodate future high-speed rail services and improve regional connectivity. It is part of the larger Transbay Program, which aims to enhance transit options and promote sustainable urban development in the area.