Burger King is a well-known fast-food chain that can be found in various locations across Barcelona. They offer a range of classic burgers, including the iconic Whopper, as well as chicken and vegetarian options. Burger King is known for its flame-grilled burgers, which give them a distinct and delicious flavor. The menu also includes a variety of sides, such as fries and onion rings, as well as milkshakes and desserts. With its convenient locations and affordable prices, Burger King is a popular choice for a quick and satisfying burger in Barcelona.