Los Angeles, located in southwestern California, is the second largest city in the United States and the largest city in the western United States. It is often referred to as the City of Angels. Los Angeles is one of the world's centers of business, international trade, science, education, culture, entertainment and sports. It has the largest seaport in the western United States and is one of the largest bases in the US petrochemical, marine, aerospace and electronics industries. Los Angeles has many world-renowned institutions of higher education, and the prestigious institutions of higher education in the Greater Los Angeles area include Caltech, UCLA, and the University of Southern California (USC). For entertainment, Hollywood, California Disneyland, Universal Studios, and more are all located in Los Angeles, and the luxury city of Beverly Hills in Southern California is also located in the heart of Los Angeles.