These bits of history matter much more than stuff like Klan statues.
You have found something very important here, the concept of “monument” and the learning it offers. Remnants of another time — especially those remnants still functioning as they’ve “always been” — provide us with a rich look into our human history.
I grew up in a city that built diners — still does — https://en.wikipedia.org/wiki/DeRaffele_Manufacturing — and the local diners, some dating back to the 1920s, some updates from the early 1960s, were one of my most important history lessons. Because our history needs to be much less about dead white guys and dates of battles, and much more about how people lived their everyday.
http://americannarrator.blogspot.com/2005/07/homecoming.html