Barcelona: Tours And Activities From Just 15.50€! And more Barcelona is one of the most popular destinations in Europe because it offers everything you can possibly imagine for an unforgettable holiday! It is the second largest city in Spain – Madrid being the first - and it is the capital of the autonomous community of Catalonia. The city is located on the Mediterranean and it has an important financial center and tourist port. During the summer its beaches - La Barceloneta - are a mandatory meeting point for its inhabitants and for tourists from all over the world. Walking along the streets of Barcelona is one of the best ways to appreciate its beauty and charm. For architecture-appreciators, the Catalan capital is an important point of reference, because this is the place where the great Antoni Gaudí was born, the greatest architect of Catalan Modernism.