The trailer of Vicky Cristina Barcelona begins with Vicky and Cristina at EL PRAT AIRPORT in Barcelona. You can see a huge mural by Joan Miró (here I put a version I made of that mural some years ago)

Other places you see ara La Rambla, la Finca Güell by Gaudí, La Sagrada Família and also La Sagrada Família but seen from modernist Hospital de Sant Pau. You also can see Rebecca Hall and Scarlett Johansson in front of Santa Maria del March church at night

(in a correfoc, a wonderful show of moving fires). Some of the images come from Asturias. For example the picnic image (in fact, paparazzi took pictures of that) .

The dress that Scarlett Johansson is wearing when she kisses Javier Bardem is blue and I saw her with a similar dress when they were shooting at Els 4 Gats:

I also imagine some of the scenes where from the house at carrer Musitu in Barcelona and also from their shooting at Esplugues del llobregat