San Fierro is a fictional city featured in the popular video game series Grand Theft Auto. It is modeled after San Francisco and is known for its iconic landmarks, diverse neighborhoods, and hilly terrain. Players can explore various districts, each with its unique character and atmosphere. In the game, San Fierro serves as one of the main locations where players can engage in missions, interact with characters, and experience the open-world gameplay. The city is rich in culture and offers a variety of activities, making it a memorable part of the GTA experience.