Complexes of high-rise buildings significantly affect the city's landscape, especially tall structures. In addition to distinctive height and architectural consistency, the characteristic features of high-rise complexes are the number of towers and their uniform or varying heights. These features represent not only the architectural character of a given ensemble but can be very much related to its spatial meaning and imageability. The purpose of the study is to analyze the formation of high-rise building complexes in Europe from the 1960s until the current decade. The survey covered 243 complexes, which include at least one building with a height of no less than 90 meters and at least one with a height of 65 meters or more. The survey shows a clear increase in the number of erected complexes with such heights after 2000. In each of the decades studied, ensembles with two or three towers predominate. Analysis of these ensembles in terms of equal and varied tower heights showed a predominance of ensembles with varied heights in the height ranges above 150 m. The highest height - more than 300 m - was reached by ensembles with towers of varying heights.