Of course, being in Barcelona and not looking at the main symbol of the city, the great long-term construction, the Sagrada Familia is just a crime. They say that visitors still see the ghost of Antoni Gaudi inside the temple.
Arc de Triomphe, Citadel Park, Born district, where you can buy delicious souvenirs, and then the port, the fishing area of Barceloneta and the promenade with beaches.
I just listed the minimum program - and so, there are so many things! I don't even want to tell everything - believe me, you just have to see it!