the tallest building in croatia is currently the tall zagreb cathedral. west gate tower b in split is set to become croatia's tallest building upon completion. west gate tower b will have 27 floors and it will be 130 meters tall, it is scheduled to be completed after q3 2018. the tallest structure in croatia is the chimney of the plomin power station in plomin, istria. the tallest croatian skyscraper is poslovni centar strojarska in zagreb, it is tall and it is completed in 2015. first skyscraper was loewy building built in 1933, it has 9 floors and it is tall, it was built in zagreb. one of the most popular skyscrapers in zagreb is neboder - ilica 1, it was renovated in 2006 but originally is completed in 1958.