It is nearly impossible to find a completely tourist free place in Barcelona. In this article I tried to be as least touristy as possible picking something different to try that you would be normally suggested to see when visiting Barcelona.
Parc de la Serralada de Marina
If you are into outdoor activities then you can head to the north east of the city towards Parc de la Serralada de Marina. There, you will find plenty opportunities of hiking, walking and cycling.
Pizzeria Peccato Di Gola
Visited this place back in February 2016, nice tiny place with lovely pizza and it does not feel like touristy. You will find this pizzeria at Av. del Paraŀlel.
Parc del Guinardó (Photo by by Marti Garcia)
Located literally less than a mile away from world famous Park Guell, this park offers its unique atmosphere
Mirador d’Avions del Prat
Within the grounds of Barcelona El Prat airport there is an observation area where you can sit down, watch planes to land and take some pictures
Platja del Pont de Petroli
Much quieter beach that features a long bridge stretching towards the sea called Pont de Petroli. However, to get there you will have to travel 10km towards Badalona. If you don’t mind that then it is well worth the visit, especially before the sunset.
And just to convince you one more picture of this bridge below
by Josep M.T.