Turó de la Rovira is a hill overlooking Barcelona with an altitude of 262m. It has been continually occupied, in one form or another, from the Iberian era to present.
During the Spanish Civil War the Republican anti-air defence authority found that the hill was the most suitable place to build its anti-aircraft battery, which was instrumental in republican efforts to defend Barcelona. Post Spanish Civil-War the then abandoned military structures were used as shelters and the shanty town of Els Canons, which survived into the ‘90s, sprung up around them. Also during this time, water tanks and communication towers were installed, some of which can still be seen to this day.
Wikipedia https://en.wikipedia.org/wiki/Turó_de_la_Rovira
Address 61I Avinguda de l'Estatut de Catalunya, Barcelona 08032, Spain
Coordinates 41°25'9.342" N 2°9'41.55" E