Amphissa t1_ixfcedp wrote

Two reasons, buildings were kept low due to earthquake threats. Then, as technology progressed to the point that the tall buildings roll during earthquakes, they became more common, Second, part of the skyline is left open so that the LA City Hall can be seen from a distance, the 10 Freeway for example. Anyone can visit the City Hall and it's worth the view and art deco appearance.