Barcelona
Barcelona is great for walking, with beaches, food, art, bars, buildings.
The Gaudi Trio:
Sagrada Familia: It's not finished yet... the lighting is really beautiful.
Casa Mira: a Gaudi-designed apartment building showing where Gaudi lived, the roof of the building is great for hitting the pictures very out of the box.
Casa Bartolo: one of my favourite buildings, it shows Gaudi's imagination and mastery of curves.
Caramel Hill: suitable for the evening to go, watch a sunset, and the whole city gradually darkening night scenery, see the city lights up a little bit, if you are lucky, there will be a light show outdoor party in the evening, feel the enthusiasm of the Spanish.
#barcelona
You can arrange half a day to go to the beach, the city's more famous beaches are: barceloneta, gave, castelldefels. not too far away you can take the train to sitges, about an hour drive.
Gracia Street: In the evening you can stroll down Gracia Street. It's a street of luxury goods, and the view is beautiful.