California, a western U.S. state, stretches from the Mexican border along the Pacific for nearly 900 miles. Its terrain includes cliff-lined beaches, redwood forest, the Sierra Nevada Mountains, Central Valley farmland and the Mojave Desert. The city of Los Angeles is the seat of the Hollywood entertainment industry. Hilly San Francisco is known for the Golden Gate Bridge, Alcatraz Island and cable cars. California is considered a global trendsetter in popular culture, innovation, and politics. It is considered the origin of the American film industry, the hippie counterculture, the Internet, and the personal computer, among others. Although most of the state has a Mediterranean climate, due to the state's large size, the climate ranges from polar to subtropical. The cool California Current offshore often creates summer fog near the coast. Farther inland, there are colder winters and hotter summers.