Carl's Jr. is a well-known American burger chain with a branch in Plaza de España, Barcelona. They are famous for their big, juicy burgers made with high-quality ingredients. Carl's Jr. offers a variety of burger options, from classic beef patties to chicken and vegetarian options. Their burgers are known for their generous portion sizes and delicious flavors. The restaurant has a casual and laid-back atmosphere, making it a great spot for a satisfying meal. If you're craving a hearty and flavorful burger in Plaza de España, Carl's Jr. is a great place to visit.