EntityQ5270361· pop 6· linked from 203 articlesDiagonal Zero ZeroSign in to saveSkyscraper in Catalonia, SpainConnectionshigh-tech architectureEntityEmperador Castellana TowerEntitylist of tallest buildings in BarcelonaEntitySpainCountryMadridEntityBarcelonaEntityCataloniaEntitySevilleEntitygeographic coordinate systemEntityBilbaoEntityWayback MachineEntityBasilica and Expiatory Church of the Holy FamilyEntityCamp NouEntityPark GüellEntityLa PedreraEntityCasa BatllóEntityTelefónicaEntityCathedral of the Holy Cross and Saint EulaliaEntityPalau de la Música CatalanaEntityLluís Companys Olympic StadiumEntityCategoriesHeadquarters in SpainHigh-tech architectureOffice buildings completed in 2011Skyscraper office buildings in BarcelonaTelefónica