Located in the northeast of Spain, Catalonia is divided into four provinces (Barcelona, Girona, Lleida and Tarragona). Catalan and Castilian (Spanish) are the official languages. Bordered by the Mediterranean Sea, Catalonia is appreciated for its diversity from the Pyrenees mountains at North to its seaside, from the Costa Brava to the Costa Daurada. Witness to centuries of history, the autonomous region also has an invaluable heritage, including the prehistoric sites of the provinces of Tarragona and Lleida and the achievements of Antoni Gaudi in Barcelona (the Guell Park, the Sagrada Familia, etc.).