"Beeldenstorm in Dutch (roughly "statue storm"), and Bildersturm in German ("image/statue storm") are terms used for outbreaks of destruction of religious images that occurred in Europe in the 16th century, known in English as the Great Iconoclasm or Iconoclastic Fury. During these spates of iconoclasm, Catholic art and many forms of church fittings and decoration were destroyed in unofficial or mob actions by Calvinist Protestant crowds as part of the Protestant Reformation. Most of the destruction was of art in churches and public places."
Sure, a lot of churches also got destroyed. Yet, a lot of churches are in a remarkably good state of preservation. They are not the only preserved buildings, but the most obvious ones. There are also a few roman aquaeducts preserved, like the one in Nimes, France. And if I am not mistaken, some of the water delivery to todays Rome still uses partially roman aquaeducts. Also, the Pantheon in Rome is in a remarkably great state.
The sad thing about the Parthenon (and the Acropolis in general) was that it had been well preserved until then, albeit with changes. It had successively been a church and a mosque. Unfortunately, the Acropolis was also the most defensible position in Athens, so it was (since its inception) a strategic outpost as well. :-(
https://en.m.wikipedia.org/wiki/Beeldenstorm?wprov=sfla1