The magnificent classical monuments of the Acropolis of Athens for about 2500 years dominate its sacred rock and are admired by millions of visitors. Perhaps many non-experts are wondering how these masterpieces of classical architecture still stand for so many centuries. The truth is that the answer is a component of various factors.
The first important factor is the ground on which the monuments are founded. This is of course the rock.
Then, a very important factor is this: The system: "Soil + Rock" has a significant total height. This means that it has a large oscillation period or a small oscillation frequency. But in Greece most earthquakes are of high frequency and neighboring. So this contributes to avoiding the destructive phenomenon of coordination.
Finally, the way the monumental modular columns are structured also contributes to their anti-seismicity.
