When looking at a city from a particular point of view, horizon outline or horizon diagram means the roof , chimney , high dome , pinnacle , and other architectural and natural features (such as hills , mounds , elevations ) of high-rise buildings (especially buildings) near the horizon. Plants) etc. refers to the shadow-like outline or outline that emerges . The horizon of a city has its own characteristics , much like a fingerprint. Because everyone can recognize the outlines of many high-rise buildings in the city. Many cities have regulations on how much a new building can affect the city's horizon .