Tarragona's high street is Rambla, a meeting place for the people of Tarragona, which leads to the famous "Balcony of the Mediterranean". In the lower part of the city is the fishing quarter, known as the Serrallo.
The old quarter, in the upper part of the city and surrounded by the ancient Roman Walls, is dominated by the Cathedral, built in transitional Romanesque-Gothic style. Tarragona still preserves many vestiges from the time of its maximum splendour when it was the capital of the Roman province of Hispania Citerior: the Praetorium, the Circus, the Amphitheatre, the Forum and the walls and towers. Not far from the city we find the Roman aqueduct known as the "Devil's Bridge" and the Mausoleum of Centcelles, famous for its mosaics. Following the route of the Via Augusta, from north to south, we find the Arc de Barà, the Roman villa of Els Munts in Altafulla, the Quarry of El Mèdol and the Tower of the Scipios, a funerary monument.
The industrialization of the county took place during the sixties and seventies when the the large petrochemical complex was built. Tourism is another mainstay of the county's economy with a large part of the tourist accommodation.