Burger King is a popular fast food chain that offers a variety of burgers at Retiro subway station. Their menu includes classic options like the Whopper, as well as specialty burgers like the Bacon King and the Mushroom Swiss. The burgers are made with flame-grilled beef patties and served with fresh toppings and sauces. Whether you prefer a simple cheeseburger or a loaded burger with all the fixings, Burger King has something for everyone.